513738864 has 30 divisors (see below), whose sum is σ = 1437755696. Its totient is φ = 171246240.

The previous prime is 513738847. The next prime is 513738893. The reversal of 513738864 is 468837315.

513738864 is a `hidden beast` number, since 513 + 73 + 8 + 8 + 64 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1783672 + ... + 1783959.

Almost surely, 2^513738864 is an apocalyptic number.

It is an amenable number.

513738864 is an abundant number, since it is smaller than the sum of its proper divisors (924016832).

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

513738864 is a wasteful number, since it uses less digits than its factorization.

513738864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3567645 (or 3567636 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 513738864 is about 22665.8082582554. The cubic root of 513738864 is about 800.9046349922.

The spelling of 513738864 in words is "five hundred thirteen million, seven hundred thirty-eight thousand, eight hundred sixty-four".