189513763944 has 128 divisors (see below), whose sum is σ = 493267968000. Its totient is φ = 60610049280.

The previous prime is 189513763937. The next prime is 189513763961. The reversal of 189513763944 is 449367315981.

189513763944 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75713397 + ... + 75715899.

It is an arithmetic number, because the mean of its divisors is an integer number (3853656000).

Almost surely, 2^189513763944 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 189513763944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246633984000).

189513763944 is an abundant number, since it is smaller than the sum of its proper divisors (303754204056).

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

189513763944 is a wasteful number, since it uses less digits than its factorization.

189513763944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3375 (or 3371 counting only the distinct ones).

The product of its digits is 19595520, while the sum is 60.

The spelling of 189513763944 in words is "one hundred eighty-nine billion, five hundred thirteen million, seven hundred sixty-three thousand, nine hundred forty-four".