4,294,967,296
4,294,967,296 is 2³², the total number of addresses in IPv4.
Where 4,294,967,296 fits
Why 4,294,967,296 is special
It sounds like a lot and was not: allocation of the last unreserved blocks completed in 2011, and the shortage is the whole reason IPv6 exists. The same number is the addressable memory ceiling of a 32-bit machine, which is why 32-bit systems could not use more than four gibibytes of RAM.
4,294,967,296 is part of
Factors & digit properties
- Divisors (33)
- 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384, 32768, 65536, 131072, 262144, 524288, 1048576, 2097152, 4194304, 8388608, 16777216, 33554432, 67108864, 134217728, 268435456, 536870912, 1073741824, 2147483648, 4294967296
- Prime factorisation
- 2^32
- Digit sum
- 58
- Digital root
- 4
Representations
- Decimal
- 4294967296
- Scientific notation
- 4.295 × 10^9
Roman numerals
Roman numerals as modelled here goes up to 3,999.
Binary
Binary (base 2) as modelled here goes up to 1,000,000,000.
Octal
Octal (base 8) as modelled here goes up to 1,000,000,000.
Hexadecimal
Hexadecimal (base 16) as modelled here goes up to 1,000,000,000.
Other mathematical patterns
- Deficient number
- Happy number
- Powerful number
Related numbers & connections
2³² — the size of the IPv4 address space, and the memory ceiling of a 32-bit machine.
Numbers Around Us
- appears inPowers of two
why?
Strength 0.50, confidence "high".
Technology & computing
There are 4,294,967,296 addresses in the IPv4 address space (worldwide, IPv4). The unallocated pool ran out in 2011, which is the whole reason IPv6 exists. The same figure is the memory ceiling of a 32-bit machine.
DocumentedTechnology & computingGeography: worldwide, IPv4
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 1 reviewer-confirmed record, sourced and reviewed before publication.
Last reviewed: 15 July 2026