189805038 has 32 divisors (see below), whose sum is σ = 386975232. Its totient is φ = 62047200.

The previous prime is 189805027. The next prime is 189805067. The reversal of 189805038 is 830508981.

189805038 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183583 + ... + 184613.

It is an arithmetic number, because the mean of its divisors is an integer number (12092976).

Almost surely, 2^189805038 is an apocalyptic number.

189805038 is an abundant number, since it is smaller than the sum of its proper divisors (197170194).

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

189805038 is a wasteful number, since it uses less digits than its factorization.

189805038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1600.

The product of its (nonzero) digits is 69120, while the sum is 42.

The square root of 189805038 is about 13776.9749219486. The cubic root of 189805038 is about 574.6930061307.

The spelling of 189805038 in words is "one hundred eighty-nine million, eight hundred five thousand, thirty-eight".