18934445675904 has 512 divisors, whose sum is σ = 61373907878400. Its totient is φ = 5097406464000.

The previous prime is 18934445675869. The next prime is 18934445675917. The reversal of 18934445675904 is 40957654443981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 377900454 + ... + 377950554.

It is an arithmetic number, because the mean of its divisors is an integer number (119870913825).

Almost surely, 2^{18934445675904} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18934445675904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30686953939200).

18934445675904 is an abundant number, since it is smaller than the sum of its proper divisors (42439462202496).

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

18934445675904 is a wasteful number, since it uses less digits than its factorization.

18934445675904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50442 (or 50430 counting only the distinct ones).

The product of its (nonzero) digits is 522547200, while the sum is 69.

The spelling of 18934445675904 in words is "eighteen trillion, nine hundred thirty-four billion, four hundred forty-five million, six hundred seventy-five thousand, nine hundred four".