18838503538500 has 48 divisors (see below), whose sum is σ = 54857722308480. Its totient is φ = 5023600943200.

The previous prime is 18838503538483. The next prime is 18838503538511. The reversal of 18838503538500 is 583530583881.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6279499680 + ... + 6279502679.

It is an arithmetic number, because the mean of its divisors is an integer number (1142869214760).

Almost surely, 2^{18838503538500} is an apocalyptic number.

18838503538500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18838503538500 is an abundant number, since it is smaller than the sum of its proper divisors (36019218769980).

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

18838503538500 is a wasteful number, since it uses less digits than its factorization.

18838503538500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12559002381 (or 12559002369 counting only the distinct ones).

The product of its (nonzero) digits is 13824000, while the sum is 57.

The spelling of 18838503538500 in words is "eighteen trillion, eight hundred thirty-eight billion, five hundred three million, five hundred thirty-eight thousand, five hundred".