189031589 has 16 divisors (see below), whose sum is σ = 203412480. Its totient is φ = 175134960.

The previous prime is 189031573. The next prime is 189031597. The reversal of 189031589 is 985130981.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 189031589 - 2⁴ = 189031573 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189031519) 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, 207044 + ... + 207954.

It is an arithmetic number, because the mean of its divisors is an integer number (12713280).

Almost surely, 2^189031589 is an apocalyptic number.

189031589 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

189031589 is a deficient number, since it is larger than the sum of its proper divisors (14380891).

189031589 is a wasteful number, since it uses less digits than its factorization.

189031589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160.

The product of its (nonzero) digits is 77760, while the sum is 44.

The square root of 189031589 is about 13748.8759176887. The cubic root of 189031589 is about 573.9113253168.

The spelling of 189031589 in words is "one hundred eighty-nine million, thirty-one thousand, five hundred eighty-nine".