136237957 has 4 divisors (see below), whose sum is σ = 139560876. Its totient is φ = 132915040.

The previous prime is 136237951. The next prime is 136237973. The reversal of 136237957 is 759732631.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3389281 + 132848676 = 1841^2 + 11526^2 .

It is a cyclic number.

It is not a de Polignac number, because 136237957 - 2¹⁵ = 136205189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136237951) 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 in 3 ways as a sum of consecutive naturals, for example, 1661398 + ... + 1661479.

It is an arithmetic number, because the mean of its divisors is an integer number (34890219).

Almost surely, 2^136237957 is an apocalyptic number.

It is an amenable number.

136237957 is a deficient number, since it is larger than the sum of its proper divisors (3322919).

136237957 is an equidigital number, since it uses as much as digits as its factorization.

136237957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3322918.

The product of its digits is 238140, while the sum is 43.

The square root of 136237957 is about 11672.1016530872. The cubic root of 136237957 is about 514.5560720284.

The spelling of 136237957 in words is "one hundred thirty-six million, two hundred thirty-seven thousand, nine hundred fifty-seven".