0x819

0x819 is a hexadecimal literal used in computing to denote the integer value 0x819. In decimal, the value is 2073. The 0x prefix is used in many programming languages to indicate that the following digits are hexadecimal.

The hexadecimal digits are 8, 1, and 9, so the 16-bit binary representation is 0000 1000 0001 1001. This shows how the value is laid out in binary, which can be useful for understanding bitwise operations and low-level data handling.

Usage in programming commonly includes representing numeric constants, memory addresses, or bit masks. The hex notation facilitates aligning with byte boundaries and masking operations. For example, in languages that support bitwise operators, 0x819 & 0xFF equals 0x19, illustrating how the low byte can be isolated, and 0x819 | 0x100 equals 0x0919, showing how to set an additional bit without changing the lower bits.

Endianness affects how multi-byte values are stored in memory, but not the numeric value itself. The value 0x0819 corresponds to 2073 in decimal, and on a little-endian system it would be stored with the least-significant byte first (19, 08), while on a big-endian system the high byte would come first (08, 19).

See also: hexadecimal notation, base-16 arithmetic, and common hex literals such as 0x10 and 0xFF.