1313437864 has 32 divisors (see below), whose sum is σ = 2491237440. Its totient is φ = 649152000.

The previous prime is 1313437859. The next prime is 1313437919. The reversal of 1313437864 is 4687343131.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 252312 + ... + 257464.

It is an arithmetic number, because the mean of its divisors is an integer number (77851170).

Almost surely, 2^1313437864 is an apocalyptic number.

It is an amenable number.

1313437864 is a deficient number, since it is larger than the sum of its proper divisors (1177799576).

1313437864 is a wasteful number, since it uses less digits than its factorization.

1313437864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5521 (or 5517 counting only the distinct ones).

The product of its digits is 145152, while the sum is 40.

The square root of 1313437864 is about 36241.3833069324. The cubic root of 1313437864 is about 1095.1405097590.

The spelling of 1313437864 in words is "one billion, three hundred thirteen million, four hundred thirty-seven thousand, eight hundred sixty-four".