The notation “1e9” is a way of representing numbers in scientific notation, which is often used in mathematics and programming to express very large or very small numbers in a more compact form.
In this case, “1e9” stands for:
- 1: the coefficient
- e: stands for exponent (which is shorthand for “times ten raised to the power of”)
- 9: the exponent itself
So, “1e9” translates to:
[ 1 times 10^9 ]
This equals 1,000,000,000 (one billion).
Scientific notation is particularly useful when dealing with large numbers, as it simplifies the writing and reading of values, making calculations easier. For example, instead of writing 1,000,000,000, you can simply write 1e9. This notation is commonly used in fields like science, engineering, and computer programming.