1,000,000,000
1000000000
One billion is 10x10x10x10x10x10x10x10x10. It is a 1 followed by nine zeros. It is one thousand millions
A logarithm is the inverse operation of exponentiation. It is used to find the power to which a fixed number (called the base) must be raised to produce a given number. Logarithms help simplify calculations involving very large or very small numbers.