189109944 has 32 divisors (see below), whose sum is σ = 525306000. Its totient is φ = 63036576.

The previous prime is 189109937. The next prime is 189109967. The reversal of 189109944 is 449901981.

189109944 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 189109944.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 437539 + ... + 437970.

Almost surely, 2^189109944 is an apocalyptic number.

It is an amenable number.

189109944 is an abundant number, since it is smaller than the sum of its proper divisors (336196056).

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

189109944 is a wasteful number, since it uses less digits than its factorization.

189109944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875524 (or 875514 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The square root of 189109944 is about 13751.7251281430. The cubic root of 189109944 is about 573.9906112010.

The spelling of 189109944 in words is "one hundred eighty-nine million, one hundred nine thousand, nine hundred forty-four".