1250916864 has 40 divisors (see below), whose sum is σ = 3332524800. Its totient is φ = 416971776.

The previous prime is 1250916859. The next prime is 1250916907. The reversal of 1250916864 is 4686190521.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 405664 + ... + 408735.

It is an arithmetic number, because the mean of its divisors is an integer number (83313120).

Almost surely, 2^1250916864 is an apocalyptic number.

It is an amenable number.

1250916864 is an abundant number, since it is smaller than the sum of its proper divisors (2081607936).

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

1250916864 is an frugal number, since it uses more digits than its factorization.

1250916864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814420 (or 814404 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 1250916864 is about 35368.3030975477. The cubic root of 1250916864 is about 1077.4806571284.

The spelling of 1250916864 in words is "one billion, two hundred fifty million, nine hundred sixteen thousand, eight hundred sixty-four".