518161856 has 28 divisors (see below), whose sum is σ = 1029675360. Its totient is φ = 258716160.

The previous prime is 518161843. The next prime is 518161873. The reversal of 518161856 is 658161815.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43385 + ... + 54023.

It is an arithmetic number, because the mean of its divisors is an integer number (36774120).

Almost surely, 2^518161856 is an apocalyptic number.

It is an amenable number.

518161856 is a deficient number, since it is larger than the sum of its proper divisors (511513504).

518161856 is a wasteful number, since it uses less digits than its factorization.

518161856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11412 (or 11402 counting only the distinct ones).

The product of its digits is 57600, while the sum is 41.

The square root of 518161856 is about 22763.1688479438. The cubic root of 518161856 is about 803.1965108868.

Subtracting from 518161856 its sum of digits (41), we obtain a palindrome (518161815).

The spelling of 518161856 in words is "five hundred eighteen million, one hundred sixty-one thousand, eight hundred fifty-six".