189528589 has 2 divisors, whose sum is σ = 189528590. Its totient is φ = 189528588.

The previous prime is 189528571. The next prime is 189528611. The reversal of 189528589 is 985825981.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111471364 + 78057225 = 10558^2 + 8835^2 .

It is a cyclic number.

It is not a de Polignac number, because 189528589 - 2¹¹ = 189526541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189528569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94764294 + 94764295.

It is an arithmetic number, because the mean of its divisors is an integer number (94764295).

Almost surely, 2^189528589 is an apocalyptic number.

It is an amenable number.

189528589 is a deficient number, since it is larger than the sum of its proper divisors (1).

189528589 is an equidigital number, since it uses as much as digits as its factorization.

189528589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2073600, while the sum is 55.

The square root of 189528589 is about 13766.9382580151. The cubic root of 189528589 is about 574.4138591642.

The spelling of 189528589 in words is "one hundred eighty-nine million, five hundred twenty-eight thousand, five hundred eighty-nine".