1000000000 (number)

List of numbers – Integers 100000000 1000000000 10000000000
Cardinal	One billion (short scale) One thousand million (long scale)
Ordinal	One billionth (short scale)
Factorization	29 · 59
Binary	111011100110101100101000000000
Hexadecimal	3B9ACA00

Mathematics portal

1,000,000,000 (one billion, short scale; one thousand million or milliard, long scale) is the natural number following 999,999,999 and preceding 1,000,000,001.

In scientific notation, it is written as 10⁹.

In modern (short scale) English usage, it is usually called a billion (although in long scale usage in many other languages, a billion means 1,000,000,000,000 – a million millions). The unambiguous term is a thousand million, which has the same meaning in both scales.

In South Asian English, it is known as 100 crore or 1 arab.

The term milliard can also be used to refer to 1,000,000,000; this name very often appears in other languages, e.g. Norwegian; milliard Danish: milliard, Swedish: miljard, Hebrew:milliard.

This terminology is rarely used in English outside of archaic British English. The SI prefix giga indicates 1,000,000,000 times the base unit.

See Orders of magnitude (numbers) for larger numbers; and long and short scales.

Selected 10-digit numbers (1,000,000,000–9,999,999,999)

• 1023456789 – smallest pandigital number in base 10
• 1026753849 – smallest pandigital square that includes 0
• 1073676287 – 15th Carol number
• 1073741824 = 2³⁰
• 1073807359 – 14th Kynea number
• 1129760415 – 23rd Motzkin number
• 1134903170 – 45th Fibonacci number
• 1162261467 = 3¹⁹
• 1220703125 = 5¹³
• 1234567890 – pandigital number with the digits in order
• 1311738121 – 25th Pell number
• 1382958545 – 15th Bell number
• 1406818759 – 30th Wedderburn-Etherington number
• 1836311903 – 46th Fibonacci number
• 1882341361 – The least prime whose reversal is both square (40391²) and triangular (triangular of 57121).
• 1977326743 = 7¹¹
• 2147483647 – 8th Mersenne prime and the largest signed 32-bit integer
• 2147483648 = 2³¹
• 2214502422 – 6th primary pseudoperfect number
• 2357947691 = 11⁹
• 2971215073 – 11th Fibonacci prime (47th Fibonacci number)
• 3166815962 – 26th Pell number
• 3192727797 – 24th Motzkin number
• 3323236238 – 31st Wedderburn-Etherington number
• 3405691582 – hexadecimal CAFEBABE; used as a placeholder in programming.
• 3405697037 – hexadecimal CAFED00D; used as a placeholder in programming.
• 3486784401 = 3²⁰
• 4294836223 – 16th Carol number
• 4294967291 – Largest prime 32-bit unsigned integer
• 4294967295 – Maximum 32-bit unsigned integer (hexadecimal FFFFFFFF)
• 4294967296 = 2³²
• 4294967297 – the first composite Fermat number
• 4295098367 – 15th Kynea number
• 4807526976 – 48th Fibonacci number
• 5784634181 – 13th alternating factorial
• 6103515625 - 5¹⁴
• 6210001000 – only self-descriptive number in base 10
• 6227020800 = 13!
• 6983776800 – 15th colossally abundant number
• 7645370045 – 27th Pell number
• 7778742049 – 49th Fibonacci number
• 7862958391 – 32nd Wedderburn-Etherington number
• 8589869056 – 6th perfect number
• 8589934592 = 2³³
• 9043402501 – 25th Motzkin number
• 9814072356 – largest square pandigital number, largest pandigital pure power
• 9876543210 – largest pandigital number without redundant digits

Sense of scale

The facts below give a sense of how large 1,000,000,000 (10⁹) is in the context of time according to current scientific evidence:

• 10⁹ seconds is 114 days short of 32 calendar years (≈ 31.7 years).
• About 10⁹ minutes ago, the Roman Empire was flourishing and Christianity was emerging. (10⁹ minutes is roughly 1,900 years.)
• About 10⁹ hours ago, modern human beings and their ancestors were living in the Stone Age (more precisely, the Middle Paleolithic). (10⁹ hours is roughly 114,000 years.)
• About 10⁹ days ago, Australopithecus, an ape-like creature related to an ancestor of modern humans, roamed the African savannas. (10⁹ days is roughly 2.7 million years.)
• About 10⁹ months ago, dinosaurs walked the Earth during the late Cretaceous. (10⁹ months is roughly 82 million years.)
• About 10⁹ years ago, the first multicellular eukaryotes appeared on Earth.
• The universe is currently thought to be about 13.7 × 10⁹ years old.

In terms of distance:

• 10⁹ inches is 15,783 miles (25,400 km), more than halfway around the world and sufficient to reach any point on the globe from any other point.
• 10⁹ metres is almost three times the distance from the Earth to the Moon.
• 10⁹ kilometres is over six times the distance from the Earth to the Sun.

In terms of finance:

• The possession of assets with total value of 10⁹ United States dollars would place a person among the world's wealthiest individuals.
• As visualized in a work by artist Michael Marcovici, this amount of money in stacks of hundred-dollar bills can fit on twelve wrapped pallets.^[1]

In terms of area:

• A billion square inches would be a square about one half mile on a side.
• A piece of finely woven bed sheet cloth that contained a billion holes would measure about 500 square feet (46 m²), large enough to cover a moderate sized apartment.

In terms of volume:

• There are a billion cubic millimeters in a cubic meter.
• A billion grains of table salt or granulated sugar would occupy a volume of about two and a half cubic feet.
• A billion cubic inches would be a volume comparable to a large commercial building slightly larger than a typical supermarket.

In terms of natural landscape; a small mountain, slightly larger than Stone Mountain Georgia, United States, would weigh (have a mass of) a billion tons.

In terms of count:

A is a cube; B consists of 1000 cubes of type A. C consists of 1000 Bs; and D 1000 Cs. Thus there are 1 million As in C; and 1,000,000,000 As in D.

References

1. ^ Infosthetics (2009-01-14). One Billion Dollar (Most Expensive Artwork Ever), viewed 2010-06-17.