18788103900 has 216 divisors, whose sum is σ = 61850763520. Its totient is φ = 4946235840.

The previous prime is 18788103881. The next prime is 18788103913. The reversal of 18788103900 is 930188781.

18788103900 is a `hidden beast` number, since 187 + 8 + 81 + 0 + 390 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1914807 + ... + 1924593.

Almost surely, 2^18788103900 is an apocalyptic number.

18788103900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18788103900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30925381760).

18788103900 is an abundant number, since it is smaller than the sum of its proper divisors (43062659620).

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

18788103900 is a wasteful number, since it uses less digits than its factorization.

18788103900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9895 (or 9876 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 45.

The spelling of 18788103900 in words is "eighteen billion, seven hundred eighty-eight million, one hundred three thousand, nine hundred".