188935496464 has 240 divisors, whose sum is σ = 445105886400. Its totient is φ = 77142574080.

The previous prime is 188935496441. The next prime is 188935496473. The reversal of 188935496464 is 464694539881.

It is a self number, because there is not a number n which added to its sum of digits gives 188935496464.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 185412147 + ... + 185413165.

It is an arithmetic number, because the mean of its divisors is an integer number (1854607860).

Almost surely, 2^188935496464 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 188935496464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222552943200).

188935496464 is an abundant number, since it is smaller than the sum of its proper divisors (256170389936).

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

188935496464 is a wasteful number, since it uses less digits than its factorization.

188935496464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1254 (or 1237 counting only the distinct ones).

The product of its digits is 179159040, while the sum is 67.

The spelling of 188935496464 in words is "one hundred eighty-eight billion, nine hundred thirty-five million, four hundred ninety-six thousand, four hundred sixty-four".