18755129188938 has 32 divisors (see below), whose sum is σ = 38822954621760. Its totient is φ = 6033140789760.

The previous prime is 18755129188907. The next prime is 18755129188949. The reversal of 18755129188938 is 83988192155781.

It is a self number, because there is not a number n which added to its sum of digits gives 18755129188938.

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, 26368948 + ... + 27070863.

It is an arithmetic number, because the mean of its divisors is an integer number (1213217331930).

Almost surely, 2^{18755129188938} is an apocalyptic number.

18755129188938 is an abundant number, since it is smaller than the sum of its proper divisors (20067825432822).

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

18755129188938 is a wasteful number, since it uses less digits than its factorization.

18755129188938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53441862.

The product of its digits is 348364800, while the sum is 75.

The spelling of 18755129188938 in words is "eighteen trillion, seven hundred fifty-five billion, one hundred twenty-nine million, one hundred eighty-eight thousand, nine hundred thirty-eight".