billion

Billion is a very large number that is 1 followed by 9 zeros. It is also known as a thousand millions as 1,000 × 1000,000 = 1000,000,000. The prefix "giga-" in the word 'gigameter' refers to billion, which means 1 gigameter is nothing but a billion meters. Billion has two notations, one is 109 which is followed in the American system and the ...