136941791 has 4 divisors (see below), whose sum is σ = 156504912. Its totient is φ = 117378672.

The previous prime is 136941757. The next prime is 136941803. The reversal of 136941791 is 197149631.

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 136941791 - 2²⁶ = 69832927 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 (136941731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9781550 + ... + 9781563.

It is an arithmetic number, because the mean of its divisors is an integer number (39126228).

Almost surely, 2^136941791 is an apocalyptic number.

136941791 is a deficient number, since it is larger than the sum of its proper divisors (19563121).

136941791 is an equidigital number, since it uses as much as digits as its factorization.

136941791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19563120.

The product of its digits is 40824, while the sum is 41.

The square root of 136941791 is about 11702.2130812936. The cubic root of 136941791 is about 515.4406521697.

The spelling of 136941791 in words is "one hundred thirty-six million, nine hundred forty-one thousand, seven hundred ninety-one".