As number it is: 1,500,000,000
As a number it is: 24,600,000,000 = 24.6 billion
19.35 billion = 19,350,000,000
As a number: 7,125,000,000 = 7.125 billion
You can write out 1.8 billion as "1,800,000,000" or "one billion eight hundred million."
To write one billion three million, you would write out the number 1,003,000,000.
15,000,000,000
Since you asked how I would write the number, the answer is 1031.
As a number it is: 6,080,000,000 = 6.08 billion
As a number it is: 529,600,000,000 = 529.6 billion
As a number it is 12,800,000,000 = 12.8 billion
As a number it is: 24,600,000,000 = 24.6 billion
As a number: 7,125,000,000 = 7.125 billion
19.35 billion = 19,350,000,000
You can write out 1.8 billion as "1,800,000,000" or "one billion eight hundred million."
15,000,000,000
15,000,027
80 billion = 80,000,000,000