518564468 has 12 divisors (see below), whose sum is σ = 909512100. Its totient is φ = 258703872.

The previous prime is 518564443. The next prime is 518564503. The reversal of 518564468 is 864465815.

It can be written as a sum of positive squares in 2 ways, for example, as 316412944 + 202151524 = 17788^2 + 14218^2 .

It is a super-3 number, since 3×518564468³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

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, 142571 + ... + 146162.

It is an arithmetic number, because the mean of its divisors is an integer number (75792675).

Almost surely, 2^518564468 is an apocalyptic number.

It is an amenable number.

518564468 is a deficient number, since it is larger than the sum of its proper divisors (390947632).

518564468 is a wasteful number, since it uses less digits than its factorization.

518564468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289186 (or 289184 counting only the distinct ones).

The product of its digits is 921600, while the sum is 47.

The square root of 518564468 is about 22772.0106270834. The cubic root of 518564468 is about 803.4044850500.

The spelling of 518564468 in words is "five hundred eighteen million, five hundred sixty-four thousand, four hundred sixty-eight".