189107239 has 2 divisors, whose sum is σ = 189107240. Its totient is φ = 189107238.

The previous prime is 189107207. The next prime is 189107263. The reversal of 189107239 is 932701981.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 189107239 - 2⁵ = 189107207 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 (189107839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94553619 + 94553620.

It is an arithmetic number, because the mean of its divisors is an integer number (94553620).

Almost surely, 2^189107239 is an apocalyptic number.

189107239 is a deficient number, since it is larger than the sum of its proper divisors (1).

189107239 is an equidigital number, since it uses as much as digits as its factorization.

189107239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 189107239 is about 13751.6267764945. The cubic root of 189107239 is about 573.9878744297.

The spelling of 189107239 in words is "one hundred eighty-nine million, one hundred seven thousand, two hundred thirty-nine".