18884694492 has 36 divisors (see below), whose sum is σ = 47802039376. Its totient is φ = 6286230720.

The previous prime is 18884694487. The next prime is 18884694509. The reversal of 18884694492 is 29449648881.

18884694492 is a `hidden beast` number, since 1 + 8 + 8 + 84 + 69 + 4 + 492 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 334609 + ... + 386952.

Almost surely, 2^18884694492 is an apocalyptic number.

18884694492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18884694492 is an abundant number, since it is smaller than the sum of its proper divisors (28917344884).

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

18884694492 is a wasteful number, since it uses less digits than its factorization.

18884694492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722298 (or 722293 counting only the distinct ones).

The product of its digits is 31850496, while the sum is 63.

The spelling of 18884694492 in words is "eighteen billion, eight hundred eighty-four million, six hundred ninety-four thousand, four hundred ninety-two".