518668885 has 8 divisors (see below), whose sum is σ = 711317376. Its totient is φ = 355658640.

The previous prime is 518668879. The next prime is 518668903. The reversal of 518668885 is 588866815.

It is a happy number.

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

It is not a de Polignac number, because 518668885 - 2¹⁷ = 518537813 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7409521 + ... + 7409590.

It is an arithmetic number, because the mean of its divisors is an integer number (88914672).

Almost surely, 2^518668885 is an apocalyptic number.

It is an amenable number.

518668885 is a deficient number, since it is larger than the sum of its proper divisors (192648491).

518668885 is a wasteful number, since it uses less digits than its factorization.

518668885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14819123.

The product of its digits is 3686400, while the sum is 55.

The square root of 518668885 is about 22774.3031726549. The cubic root of 518668885 is about 803.4584053507.

The spelling of 518668885 in words is "five hundred eighteen million, six hundred sixty-eight thousand, eight hundred eighty-five".