18939227954200 has 48 divisors (see below), whose sum is σ = 46623922942680. Its totient is φ = 7130062287360.

The previous prime is 18939227954197. The next prime is 18939227954221. The reversal of 18939227954200 is 245972293981.

It is a Smith number, since the sum of its digits (61) coincides with the sum of the digits of its prime factors.

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, 2785177182 + ... + 2785183981.

Almost surely, 2^{18939227954200} is an apocalyptic number.

18939227954200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18939227954200 is an abundant number, since it is smaller than the sum of its proper divisors (27684694988480).

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

18939227954200 is a wasteful number, since it uses less digits than its factorization.

18939227954200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5570361196 (or 5570361187 counting only the distinct ones).

The product of its (nonzero) digits is 19595520, while the sum is 61.

The spelling of 18939227954200 in words is "eighteen trillion, nine hundred thirty-nine billion, two hundred twenty-seven million, nine hundred fifty-four thousand, two hundred".