136613191 has 8 divisors (see below), whose sum is σ = 160496784. Its totient is φ = 114640320.

The previous prime is 136613179. The next prime is 136613227. The reversal of 136613191 is 191316631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 136613191 - 2²⁵ = 103058759 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 (136613791) 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 7 ways as a sum of consecutive naturals, for example, 477526 + ... + 477811.

It is an arithmetic number, because the mean of its divisors is an integer number (20062098).

Almost surely, 2^136613191 is an apocalyptic number.

136613191 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

136613191 is a deficient number, since it is larger than the sum of its proper divisors (23883593).

136613191 is a wasteful number, since it uses less digits than its factorization.

136613191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955361.

The product of its digits is 2916, while the sum is 31.

The square root of 136613191 is about 11688.1645693411. The cubic root of 136613191 is about 515.0280450998.

The spelling of 136613191 in words is "one hundred thirty-six million, six hundred thirteen thousand, one hundred ninety-one".