18889077400 has 48 divisors (see below), whose sum is σ = 46500472440. Its totient is φ = 7111180800.

The previous prime is 18889077391. The next prime is 18889077407. The reversal of 18889077400 is 477098881.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18889077407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2774406 + ... + 2781205.

Almost surely, 2^18889077400 is an apocalyptic number.

18889077400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18889077400 is an abundant number, since it is smaller than the sum of its proper divisors (27611395040).

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

18889077400 is a wasteful number, since it uses less digits than its factorization.

18889077400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5555644 (or 5555635 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 52.

The spelling of 18889077400 in words is "eighteen billion, eight hundred eighty-nine million, seventy-seven thousand, four hundred".