518688396 has 18 divisors (see below), whose sum is σ = 1311129092. Its totient is φ = 172896120.

The previous prime is 518688319. The next prime is 518688407. The reversal of 518688396 is 693886815.

It is a tau number, because it is divible by the number of its divisors (18).

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, 7203970 + ... + 7204041.

Almost surely, 2^518688396 is an apocalyptic number.

It is an amenable number.

518688396 is an abundant number, since it is smaller than the sum of its proper divisors (792440696).

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

518688396 is a wasteful number, since it uses less digits than its factorization.

518688396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14408021 (or 14408016 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 54.

The square root of 518688396 is about 22774.7315242134. The cubic root of 518688396 is about 803.4684799094.

The spelling of 518688396 in words is "five hundred eighteen million, six hundred eighty-eight thousand, three hundred ninety-six".