136261187 has 2 divisors, whose sum is σ = 136261188. Its totient is φ = 136261186.

The previous prime is 136261133. The next prime is 136261199. The reversal of 136261187 is 781162631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 136261187 - 2⁸ = 136260931 is a prime.

It is a super-2 number, since 2×136261187² = 37134222165297938, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (136261087) 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 as a sum of consecutive naturals, namely, 68130593 + 68130594.

It is an arithmetic number, because the mean of its divisors is an integer number (68130594).

Almost surely, 2^136261187 is an apocalyptic number.

136261187 is a deficient number, since it is larger than the sum of its proper divisors (1).

136261187 is an equidigital number, since it uses as much as digits as its factorization.

136261187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 35.

The square root of 136261187 is about 11673.0967185233. The cubic root of 136261187 is about 514.5853161013.

The spelling of 136261187 in words is "one hundred thirty-six million, two hundred sixty-one thousand, one hundred eighty-seven".