136357609 has 2 divisors, whose sum is σ = 136357610. Its totient is φ = 136357608.

The previous prime is 136357603. The next prime is 136357619. The reversal of 136357609 is 906753631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136305625 + 51984 = 11675^2 + 228^2 .

It is a cyclic number.

It is not a de Polignac number, because 136357609 - 2⁵ = 136357577 is a prime.

It is a plaindrome in base 13.

It is not a weakly prime, because it can be changed into another prime (136357603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68178804 + 68178805.

It is an arithmetic number, because the mean of its divisors is an integer number (68178805).

Almost surely, 2^136357609 is an apocalyptic number.

It is an amenable number.

136357609 is a deficient number, since it is larger than the sum of its proper divisors (1).

136357609 is an equidigital number, since it uses as much as digits as its factorization.

136357609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 102060, while the sum is 40.

The square root of 136357609 is about 11677.2260832785. The cubic root of 136357609 is about 514.7066655174.

The spelling of 136357609 in words is "one hundred thirty-six million, three hundred fifty-seven thousand, six hundred nine".