18918074800 has 30 divisors (see below), whose sum is σ = 45450675668. Its totient is φ = 7567229760.

The previous prime is 18918074797. The next prime is 18918074801. The reversal of 18918074800 is 847081981.

It is not an unprimeable number, because it can be changed into a prime (18918074801) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23647194 + ... + 23647993.

Almost surely, 2^18918074800 is an apocalyptic number.

18918074800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18918074800 is an abundant number, since it is smaller than the sum of its proper divisors (26532600868).

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

18918074800 is a wasteful number, since it uses less digits than its factorization.

18918074800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47295205 (or 47295194 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 46.

The spelling of 18918074800 in words is "eighteen billion, nine hundred eighteen million, seventy-four thousand, eight hundred".