518621344 has 12 divisors (see below), whose sum is σ = 1021035834. Its totient is φ = 259310656.

The previous prime is 518621317. The next prime is 518621357. The reversal of 518621344 is 443126815.

It can be written as a sum of positive squares in only one way, i.e., 316412944 + 202208400 = 17788^2 + 14220^2 .

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

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 as a sum of consecutive naturals, namely, 8103427 + ... + 8103490.

Almost surely, 2^518621344 is an apocalyptic number.

It is an amenable number.

518621344 is a deficient number, since it is larger than the sum of its proper divisors (502414490).

518621344 is a wasteful number, since it uses less digits than its factorization.

518621344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16206927 (or 16206919 counting only the distinct ones).

The product of its digits is 23040, while the sum is 34.

The square root of 518621344 is about 22773.2594065935. The cubic root of 518621344 is about 803.4338563663.

The spelling of 518621344 in words is "five hundred eighteen million, six hundred twenty-one thousand, three hundred forty-four".