In the U.S., a billion is a thousand million, so Nine zeros.
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1 billion has 9 zeros.
The value 1 billion regardless of whether it is 1 billion in the US, UK or Canada is always: 1,000,000,000
In the US:1 billion = 1091 billion billion = 1018That's '1' followed by 18 zeros, for a grand total of 19 digits.But in the UK:1 billion = 10121 billion billion = 1024That's '1' followed by 24 zeros, for a grand total of 25 digits.
9 zeros
Ten billion is written as 1 followed by 10 zeros; 10,000,000,000