513618168 has 64 divisors (see below), whose sum is σ = 1514833920. Its totient is φ = 142012800.

The previous prime is 513618163. The next prime is 513618169. The reversal of 513618168 is 861816315.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513618163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44103 + ... + 54518.

It is an arithmetic number, because the mean of its divisors is an integer number (23669280).

Almost surely, 2^513618168 is an apocalyptic number.

It is an amenable number.

513618168 is an abundant number, since it is smaller than the sum of its proper divisors (1001215752).

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

513618168 is a wasteful number, since it uses less digits than its factorization.

513618168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98668 (or 98664 counting only the distinct ones).

The product of its digits is 34560, while the sum is 39.

The square root of 513618168 is about 22663.1455892601. The cubic root of 513618168 is about 800.8419095080.

The spelling of 513618168 in words is "five hundred thirteen million, six hundred eighteen thousand, one hundred sixty-eight".