0x1598
0x1598 is a hexadecimal numeric literal, a common way to represent numbers in many programming languages. The prefix 0x signals that the digits following it are in base 16 rather than decimal.
In decimal, 0x1598 equals 5528. This conversion comes from summing the place values: 1×4096 + 5×256 + 9×16
0x1598 is typically encountered as a value in source code, such as an integer constant assigned to
There is no widely recognized meaning or standard named specifically "0x1598" beyond it being a hex literal