136236791 has 4 divisors (see below), whose sum is σ = 137641392. Its totient is φ = 134832192.

The previous prime is 136236769. The next prime is 136236799. The reversal of 136236791 is 197632631.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 136236791 - 2¹⁰ = 136235767 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 (136236799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 702155 + ... + 702348.

It is an arithmetic number, because the mean of its divisors is an integer number (34410348).

Almost surely, 2^136236791 is an apocalyptic number.

136236791 is a deficient number, since it is larger than the sum of its proper divisors (1404601).

136236791 is an equidigital number, since it uses as much as digits as its factorization.

136236791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1404600.

The product of its digits is 40824, while the sum is 38.

The square root of 136236791 is about 11672.0517048204. The cubic root of 136236791 is about 514.5546040721.

The spelling of 136236791 in words is "one hundred thirty-six million, two hundred thirty-six thousand, seven hundred ninety-one".