189592631 has 2 divisors, whose sum is σ = 189592632. Its totient is φ = 189592630.

The previous prime is 189592609. The next prime is 189592661. The reversal of 189592631 is 136295981.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (136295981) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189592631 is a prime.

It is a super-2 number, since 2×189592631² = 71890731459004322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189592661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94796315 + 94796316.

It is an arithmetic number, because the mean of its divisors is an integer number (94796316).

Almost surely, 2^189592631 is an apocalyptic number.

189592631 is a deficient number, since it is larger than the sum of its proper divisors (1).

189592631 is an equidigital number, since it uses as much as digits as its factorization.

189592631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 44.

The square root of 189592631 is about 13769.2639963071. The cubic root of 189592631 is about 574.4785503188.

The spelling of 189592631 in words is "one hundred eighty-nine million, five hundred ninety-two thousand, six hundred thirty-one".