189691044 has 12 divisors (see below), whose sum is σ = 442612464. Its totient is φ = 63230344.

The previous prime is 189691043. The next prime is 189691063. The reversal of 189691044 is 440196981.

189691044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×189691044³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 189690987 and 189691005.

It is not an unprimeable number, because it can be changed into a prime (189691043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7903782 + ... + 7903805.

It is an arithmetic number, because the mean of its divisors is an integer number (36884372).

Almost surely, 2^189691044 is an apocalyptic number.

It is an amenable number.

189691044 is an abundant number, since it is smaller than the sum of its proper divisors (252921420).

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

189691044 is a wasteful number, since it uses less digits than its factorization.

189691044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15807594 (or 15807592 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 189691044 is about 13772.8371804796. The cubic root of 189691044 is about 574.5779324834.

The spelling of 189691044 in words is "one hundred eighty-nine million, six hundred ninety-one thousand, forty-four".