189589589 has 16 divisors (see below), whose sum is σ = 219571968. Its totient is φ = 160348032.

The previous prime is 189589571. The next prime is 189589601. The reversal of 189589589 is 985985981.

189589589 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 189589589 - 2⁸ = 189589333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189589549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183017 + ... + 184049.

It is an arithmetic number, because the mean of its divisors is an integer number (13723248).

Almost surely, 2^189589589 is an apocalyptic number.

It is an amenable number.

189589589 is a deficient number, since it is larger than the sum of its proper divisors (29982379).

189589589 is a wasteful number, since it uses less digits than its factorization.

189589589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1364.

The product of its digits is 9331200, while the sum is 62.

The square root of 189589589 is about 13769.1535324435. The cubic root of 189589589 is about 574.4754778135.

The spelling of 189589589 in words is "one hundred eighty-nine million, five hundred eighty-nine thousand, five hundred eighty-nine".