136252613 has 4 divisors (see below), whose sum is σ = 155717280. Its totient is φ = 116787948.

The previous prime is 136252609. The next prime is 136252619. The reversal of 136252613 is 316252631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 316252631 = 883 ⋅358157.

It is a cyclic number.

It is not a de Polignac number, because 136252613 - 2² = 136252609 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 (136252619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9732323 + ... + 9732336.

It is an arithmetic number, because the mean of its divisors is an integer number (38929320).

Almost surely, 2^136252613 is an apocalyptic number.

It is an amenable number.

136252613 is a deficient number, since it is larger than the sum of its proper divisors (19464667).

136252613 is an equidigital number, since it uses as much as digits as its factorization.

136252613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19464666.

The product of its digits is 6480, while the sum is 29.

The square root of 136252613 is about 11672.7294580145. The cubic root of 136252613 is about 514.5745227439.

The spelling of 136252613 in words is "one hundred thirty-six million, two hundred fifty-two thousand, six hundred thirteen".