196236539 has 2 divisors, whose sum is σ = 196236540. Its totient is φ = 196236538.

The previous prime is 196236517. The next prime is 196236571. The reversal of 196236539 is 935632691.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 196236539 - 2²⁰ = 195187963 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 196236539.

It is not a weakly prime, because it can be changed into another prime (196236589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98118269 + 98118270.

It is an arithmetic number, because the mean of its divisors is an integer number (98118270).

Almost surely, 2^196236539 is an apocalyptic number.

196236539 is a deficient number, since it is larger than the sum of its proper divisors (1).

196236539 is an equidigital number, since it uses as much as digits as its factorization.

196236539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 262440, while the sum is 44.

The square root of 196236539 is about 14008.4452741909. The cubic root of 196236539 is about 581.1121536299.

It can be divided in two parts, 19623 and 6539, that added together give a palindrome (26162).

The spelling of 196236539 in words is "one hundred ninety-six million, two hundred thirty-six thousand, five hundred thirty-nine".