189231427 has 16 divisors (see below), whose sum is σ = 237388032. Its totient is φ = 146538720.

The previous prime is 189231407. The next prime is 189231443. The reversal of 189231427 is 724132981.

189231427 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 189231427 - 2⁷ = 189231299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (189231407) 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, 5013 + ... + 20089.

It is an arithmetic number, because the mean of its divisors is an integer number (14836752).

Almost surely, 2^189231427 is an apocalyptic number.

189231427 is a deficient number, since it is larger than the sum of its proper divisors (48156605).

189231427 is a wasteful number, since it uses less digits than its factorization.

189231427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15258.

The product of its digits is 24192, while the sum is 37.

The square root of 189231427 is about 13756.1414284675. The cubic root of 189231427 is about 574.1134941721.

The spelling of 189231427 in words is "one hundred eighty-nine million, two hundred thirty-one thousand, four hundred twenty-seven".