18706851186 has 32 divisors (see below), whose sum is σ = 38711312640. Its totient is φ = 6019431936.

The previous prime is 18706851161. The next prime is 18706851197. The reversal of 18706851186 is 68115860781.

It is a Curzon 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 15 ways as a sum of consecutive naturals, for example, 1681735 + ... + 1692821.

It is an arithmetic number, because the mean of its divisors is an integer number (1209728520).

Almost surely, 2^18706851186 is an apocalyptic number.

18706851186 is an abundant number, since it is smaller than the sum of its proper divisors (20004461454).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18706851186 is a wasteful number, since it uses less digits than its factorization.

18706851186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20818.

The product of its (nonzero) digits is 645120, while the sum is 51.

The spelling of 18706851186 in words is "eighteen billion, seven hundred six million, eight hundred fifty-one thousand, one hundred eighty-six".