503918864 has 20 divisors (see below), whose sum is σ = 1000157340. Its totient is φ = 245813760.

The previous prime is 503918839. The next prime is 503918887. The reversal of 503918864 is 468819305.

It can be written as a sum of positive squares in 2 ways, for example, as 158256400 + 345662464 = 12580^2 + 18592^2 .

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

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, 383429 + ... + 384740.

It is an arithmetic number, because the mean of its divisors is an integer number (50007867).

Almost surely, 2^503918864 is an apocalyptic number.

It is an amenable number.

503918864 is a deficient number, since it is larger than the sum of its proper divisors (496238476).

503918864 is a wasteful number, since it uses less digits than its factorization.

503918864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768218 (or 768212 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 503918864 is about 22448.1372055679. The cubic root of 503918864 is about 795.7687349508.

The spelling of 503918864 in words is "five hundred three million, nine hundred eighteen thousand, eight hundred sixty-four".