18684738192 has 20 divisors (see below), whose sum is σ = 48268907120. Its totient is φ = 6228246048.

The previous prime is 18684738179. The next prime is 18684738211. The reversal of 18684738192 is 29183748681.

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

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, 194632642 + ... + 194632737.

It is an arithmetic number, because the mean of its divisors is an integer number (2413445356).

Almost surely, 2^18684738192 is an apocalyptic number.

18684738192 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18684738192 is an abundant number, since it is smaller than the sum of its proper divisors (29584168928).

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

18684738192 is a wasteful number, since it uses less digits than its factorization.

18684738192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389265390 (or 389265384 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 57.

The spelling of 18684738192 in words is "eighteen billion, six hundred eighty-four million, seven hundred thirty-eight thousand, one hundred ninety-two".