518918990 has 8 divisors (see below), whose sum is σ = 934054200. Its totient is φ = 207567592.

The previous prime is 518918977. The next prime is 518919017. The reversal of 518918990 is 99819815.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 25945940 + ... + 25945959.

It is an arithmetic number, because the mean of its divisors is an integer number (116756775).

Almost surely, 2^518918990 is an apocalyptic number.

518918990 is a deficient number, since it is larger than the sum of its proper divisors (415135210).

518918990 is a wasteful number, since it uses less digits than its factorization.

518918990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51891906.

The product of its (nonzero) digits is 233280, while the sum is 50.

The square root of 518918990 is about 22779.7934582384. The cubic root of 518918990 is about 803.5875286246.

The spelling of 518918990 in words is "five hundred eighteen million, nine hundred eighteen thousand, nine hundred ninety".