232139189 has 2 divisors, whose sum is σ = 232139190. Its totient is φ = 232139188.

The previous prime is 232139179. The next prime is 232139203. The reversal of 232139189 is 981931232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193488100 + 38651089 = 13910^2 + 6217^2 .

It is a cyclic number.

It is not a de Polignac number, because 232139189 - 2¹² = 232135093 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (232139119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116069594 + 116069595.

It is an arithmetic number, because the mean of its divisors is an integer number (116069595).

Almost surely, 2^232139189 is an apocalyptic number.

It is an amenable number.

232139189 is a deficient number, since it is larger than the sum of its proper divisors (1).

232139189 is an equidigital number, since it uses as much as digits as its factorization.

232139189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 38.

The square root of 232139189 is about 15236.1146293929. The cubic root of 232139189 is about 614.5862235324.

The spelling of 232139189 in words is "two hundred thirty-two million, one hundred thirty-nine thousand, one hundred eighty-nine".