518640088 has 16 divisors (see below), whose sum is σ = 975062880. Its totient is φ = 258623328.

The previous prime is 518640077. The next prime is 518640091. The reversal of 518640088 is 880046815.

It is a self number, because there is not a number n which added to its sum of digits gives 518640088.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83920 + ... + 89887.

It is an arithmetic number, because the mean of its divisors is an integer number (60941430).

Almost surely, 2^518640088 is an apocalyptic number.

It is an amenable number.

518640088 is a deficient number, since it is larger than the sum of its proper divisors (456422792).

518640088 is a wasteful number, since it uses less digits than its factorization.

518640088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174186 (or 174182 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 40.

The square root of 518640088 is about 22773.6709381689. The cubic root of 518640088 is about 803.4435354786.

The spelling of 518640088 in words is "five hundred eighteen million, six hundred forty thousand, eighty-eight".