18178994112 has 28 divisors (see below), whose sum is σ = 48098589096. Its totient is φ = 6059664640.

The previous prime is 18178994111. The next prime is 18178994131. The reversal of 18178994112 is 21149987181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18178994111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47340939 + ... + 47341322.

Almost surely, 2^18178994112 is an apocalyptic number.

18178994112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18178994112 is an abundant number, since it is smaller than the sum of its proper divisors (29919594984).

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

18178994112 is an equidigital number, since it uses as much as digits as its factorization.

18178994112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94682276 (or 94682266 counting only the distinct ones).

The product of its digits is 290304, while the sum is 51.

The spelling of 18178994112 in words is "eighteen billion, one hundred seventy-eight million, nine hundred ninety-four thousand, one hundred twelve".