**The numeral one billion has nine zeros.** This number is equal to one thousand million. In scientific notation, one billion is written as 1x10 to the ninth power.

When trying to get a feel for a number this large, it is helpful to put it in everyday terms. For example, to save $1 billion, a thrifty saver would have to deposit $100 in the bank each day for over 27,000 years. If a person wanted to count to one billion and could spit out numbers at the rate of three per second, it would still take over 95 years to finish.