518008881 has 8 divisors (see below), whose sum is σ = 743807680. Its totient is φ = 318774672.

The previous prime is 518008877. The next prime is 518008961. The reversal of 518008881 is 188800815.

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

It is not a de Polignac number, because 518008881 - 2² = 518008877 is a prime.

It is a super-2 number, since 2×518008881² = 536666401589744322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 13282279 = 518008881 / (5 + 1 + 8 + 0 + 0 + 8 + 8 + 8 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (518008811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6641101 + ... + 6641178.

It is an arithmetic number, because the mean of its divisors is an integer number (92975960).

Almost surely, 2^518008881 is an apocalyptic number.

It is an amenable number.

518008881 is a deficient number, since it is larger than the sum of its proper divisors (225798799).

518008881 is a wasteful number, since it uses less digits than its factorization.

518008881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13282295.

The product of its (nonzero) digits is 20480, while the sum is 39.

The square root of 518008881 is about 22759.8084570147. The cubic root of 518008881 is about 803.1174615330.

The spelling of 518008881 in words is "five hundred eighteen million, eight thousand, eight hundred eighty-one".