2000000000

2000000000, commonly written as 2,000,000,000, is the integer two billion. It equals 2 × 10^9 in scientific notation and factors as 2^10 × 5^9. As a large, round number, it is often used in testing, benchmarking, and theoretical discussions to represent a substantial quantity without venturing into astronomical scales.

In computing, 2,000,000,000 seconds after the Unix epoch (January 1, 1970) corresponds to around May 18, 2033, 03:33:20 UTC. It is also less than the maximum value of a signed 32-bit integer, 2,147,483,647, so it can be stored in standard 32-bit integer types without overflow in many programming languages. The value is frequently used in examples and limits that are near the boundary of common data types.

For data storage, 2,000,000,000 bytes is about 1.86 gibibytes (GiB) or 2.0 gigabytes (GB) in decimal units, illustrating the distinction between binary and decimal units. This number thus serves as a useful reference in discussions of memory capacity, bandwidth, and file sizes.