1249314816 has 48 divisors (see below), whose sum is σ = 3330709200. Its totient is φ = 416436224.

The previous prime is 1249314799. The next prime is 1249314827. The reversal of 1249314816 is 6184139421.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×1249314816² = 3121575018954227712, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95526 + ... + 107813.

It is an arithmetic number, because the mean of its divisors is an integer number (69389775).

Almost surely, 2^1249314816 is an apocalyptic number.

1249314816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1249314816 is an abundant number, since it is smaller than the sum of its proper divisors (2081394384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1249314816 is an equidigital number, since it uses as much as digits as its factorization.

1249314816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203364 (or 203344 counting only the distinct ones).

The product of its digits is 41472, while the sum is 39.

The square root of 1249314816 is about 35345.6477660263. The cubic root of 1249314816 is about 1077.0204844849.

The spelling of 1249314816 in words is "one billion, two hundred forty-nine million, three hundred fourteen thousand, eight hundred sixteen".