18700942986 has 32 divisors (see below), whose sum is σ = 45335620800. Its totient is φ = 5666952240.

The previous prime is 18700942979. The next prime is 18700943003. The reversal of 18700942986 is 68924900781.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15740941 + ... + 15742128.

It is an arithmetic number, because the mean of its divisors is an integer number (1416738150).

Almost surely, 2^18700942986 is an apocalyptic number.

18700942986 is an abundant number, since it is smaller than the sum of its proper divisors (26634677814).

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

18700942986 is a wasteful number, since it uses less digits than its factorization.

18700942986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31483091 (or 31483085 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

It can be divided in two parts, 1870094 and 2986, that added together give a triangular number (1873080 = T₁₉₃₅).

The spelling of 18700942986 in words is "eighteen billion, seven hundred million, nine hundred forty-two thousand, nine hundred eighty-six".