Billion

A billion is equal to 109 = 1,000,000,000. Like a million, a billion is often used as an exaggeration to mean an indefinitely large number.

In the long scale, 109 is called milliard, whereas "billion" refers to 1012. These definitions are no longer used in English-speaking countries, but there are equivalents in other languages such as French and German.

Other names for this number are gillion (from giga-, in Rowlett's Greek-based system) and tretillion (by Aarex Tiaokhiao).

Aarex Tiaokhiao calls this number noovol, 9-noogol, or goonaolheptault, and it's equal to a(10,100,0)x[7] in Aarex's Array Notation.

Username5243 calls this number niloogolsextiplex or goonvol, and it's equal to 10[1]9 in Username5243's Array Notation.

Examples

 * One billion seconds is roughly 31.7 years, and billion minutes is close to two millenia. April 29, 1902 marked exactly one billion minutes from 1 A.D.
 * The internet contains more than a billion webpages.
 * It would take 951 years for a faucet running on full power to waste a billion gallons of water.
 * , a hit single/music video by Korean rapper PSY, became the first video to reach 1 billion views in December 2012. As of June 2014, it is the most viewed video on YouTube, with about 2 billion views. On the other hand, Disney's Frozen is about 0.4 billion as of January 2015.
 * The world population is around seven billion.
 * The SI prefix giga- multiplies by one billion.