136744013 has 4 divisors (see below), whose sum is σ = 156278880. Its totient is φ = 117209148.

The previous prime is 136743977. The next prime is 136744031. The reversal of 136744013 is 310447631.

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.

It is not a de Polignac number, because 136744013 - 2⁸ = 136743757 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 (136744033) 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 in 3 ways as a sum of consecutive naturals, for example, 9767423 + ... + 9767436.

It is an arithmetic number, because the mean of its divisors is an integer number (39069720).

Almost surely, 2^136744013 is an apocalyptic number.

It is an amenable number.

136744013 is a deficient number, since it is larger than the sum of its proper divisors (19534867).

136744013 is an equidigital number, since it uses as much as digits as its factorization.

136744013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19534866.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 136744013 is about 11693.7595750896. The cubic root of 136744013 is about 515.1923911216.

The spelling of 136744013 in words is "one hundred thirty-six million, seven hundred forty-four thousand, thirteen".