192131689 has 2 divisors, whose sum is σ = 192131690. Its totient is φ = 192131688.

The previous prime is 192131669. The next prime is 192131717. The reversal of 192131689 is 986131291.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 159264400 + 32867289 = 12620^2 + 5733^2 .

It is a cyclic number.

It is not a de Polignac number, because 192131689 - 2⁵ = 192131657 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (192131669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96065844 + 96065845.

It is an arithmetic number, because the mean of its divisors is an integer number (96065845).

Almost surely, 2^192131689 is an apocalyptic number.

It is an amenable number.

192131689 is a deficient number, since it is larger than the sum of its proper divisors (1).

192131689 is an equidigital number, since it uses as much as digits as its factorization.

192131689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 40.

The square root of 192131689 is about 13861.1575634938. The cubic root of 192131689 is about 577.0316927046.

It can be divided in two parts, 19213 and 1689, that added together give a palindrome (20902).

The spelling of 192131689 in words is "one hundred ninety-two million, one hundred thirty-one thousand, six hundred eighty-nine".