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1,800,000,000.

1 billion has nine zeros, so to write 1.8 billion in numbers you would simply need to move the decimal point nine places to the right, which would give you 1,800,000,000.

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10y ago
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9y ago

According to the SI units, 1.8 billion = 1800,000,000,000 . However in USA it is 1800,000,000

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12y ago

18 000 000 000

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Q: How do you write 1.8 billion in numbers?
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