18518516662 has 8 divisors (see below), whose sum is σ = 27782527176. Its totient is φ = 9257674272.

The previous prime is 18518516659. The next prime is 18518516711. The reversal of 18518516662 is 26661581581.

It is a happy number.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 777363 + ... + 800830.

It is an arithmetic number, because the mean of its divisors is an integer number (3472815897).

Almost surely, 2^18518516662 is an apocalyptic number.

18518516662 is a deficient number, since it is larger than the sum of its proper divisors (9264010514).

18518516662 is a wasteful number, since it uses less digits than its factorization.

18518516662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1584062.

The product of its digits is 691200, while the sum is 49.

The spelling of 18518516662 in words is "eighteen billion, five hundred eighteen million, five hundred sixteen thousand, six hundred sixty-two".