136518929 has 2 divisors, whose sum is σ = 136518930. Its totient is φ = 136518928.

The previous prime is 136518913. The next prime is 136518983. The reversal of 136518929 is 929815631.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103571329 + 32947600 = 10177^2 + 5740^2 .

It is a cyclic number.

It is not a de Polignac number, because 136518929 - 2⁴ = 136518913 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 136518929.

It is not a weakly prime, because it can be changed into another prime (136518029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68259464 + 68259465.

It is an arithmetic number, because the mean of its divisors is an integer number (68259465).

Almost surely, 2^136518929 is an apocalyptic number.

It is an amenable number.

136518929 is a deficient number, since it is larger than the sum of its proper divisors (1).

136518929 is an equidigital number, since it uses as much as digits as its factorization.

136518929 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 136518929 is about 11684.1315038817. The cubic root of 136518929 is about 514.9095627792.

The spelling of 136518929 in words is "one hundred thirty-six million, five hundred eighteen thousand, nine hundred twenty-nine".