189811605872928 has 192 divisors, whose sum is σ = 547661222438400. Its totient is φ = 57205769564160.

The previous prime is 189811605872857. The next prime is 189811605872947. The reversal of 189811605872928 is 829278506118981.

It is a self number, because there is not a number n which added to its sum of digits gives 189811605872928.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12978438 + ... + 23410746.

It is an arithmetic number, because the mean of its divisors is an integer number (2852402200200).

Almost surely, 2^{189811605872928} 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 189811605872928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273830611219200).

189811605872928 is an abundant number, since it is smaller than the sum of its proper divisors (357849616565472).

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

189811605872928 is a wasteful number, since it uses less digits than its factorization.

189811605872928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10432635 (or 10432627 counting only the distinct ones).

The product of its (nonzero) digits is 278691840, while the sum is 75.

The spelling of 189811605872928 in words is "one hundred eighty-nine trillion, eight hundred eleven billion, six hundred five million, eight hundred seventy-two thousand, nine hundred twenty-eight".