1372891264 has 32 divisors (see below), whose sum is σ = 2740058640. Its totient is φ = 685190400.

The previous prime is 1372891259. The next prime is 1372891307. The reversal of 1372891264 is 4621982731.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 1372891264.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62539 + ... + 81589.

Almost surely, 2^1372891264 is an apocalyptic number.

It is an amenable number.

1372891264 is a deficient number, since it is larger than the sum of its proper divisors (1367167376).

1372891264 is an equidigital number, since it uses as much as digits as its factorization.

1372891264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19628 (or 19616 counting only the distinct ones).

The product of its digits is 145152, while the sum is 43.

The square root of 1372891264 is about 37052.5473348325. The cubic root of 1372891264 is about 1111.4212954198.

The spelling of 1372891264 in words is "one billion, three hundred seventy-two million, eight hundred ninety-one thousand, two hundred sixty-four".