189331089 has 8 divisors (see below), whose sum is σ = 252512832. Its totient is φ = 126185040.

The previous prime is 189331081. The next prime is 189331097. The reversal of 189331089 is 980133981.

It is a happy number.

189331089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (189331081) and next prime (189331097).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 189331089 - 2³ = 189331081 is a prime.

It is a super-2 number, since 2×189331089² = 71692522523851842, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 189331089.

It is not an unprimeable number, because it can be changed into a prime (189331081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8092 + ... + 21074.

It is an arithmetic number, because the mean of its divisors is an integer number (31564104).

Almost surely, 2^189331089 is an apocalyptic number.

It is an amenable number.

189331089 is a deficient number, since it is larger than the sum of its proper divisors (63181743).

189331089 is a wasteful number, since it uses less digits than its factorization.

189331089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17847.

The product of its (nonzero) digits is 46656, while the sum is 42.

The square root of 189331089 is about 13759.7634063962. The cubic root of 189331089 is about 574.2142654131.

The spelling of 189331089 in words is "one hundred eighty-nine million, three hundred thirty-one thousand, eighty-nine".