189428589 has 24 divisors (see below), whose sum is σ = 313290432. Its totient is φ = 108043200.

The previous prime is 189428557. The next prime is 189428611. The reversal of 189428589 is 985824981.

189428589 is a `hidden beast` number, since 18 + 9 + 42 + 8 + 589 = 666.

It is not a de Polignac number, because 189428589 - 2⁵ = 189428557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189428089) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35362 + ... + 40364.

It is an arithmetic number, because the mean of its divisors is an integer number (13053768).

Almost surely, 2^189428589 is an apocalyptic number.

It is an amenable number.

189428589 is a deficient number, since it is larger than the sum of its proper divisors (123861843).

189428589 is a wasteful number, since it uses less digits than its factorization.

189428589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5617 (or 5614 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 54.

The square root of 189428589 is about 13763.3058892114. The cubic root of 189428589 is about 574.3128163758.

The spelling of 189428589 in words is "one hundred eighty-nine million, four hundred twenty-eight thousand, five hundred eighty-nine".