136907189 has 2 divisors, whose sum is σ = 136907190. Its totient is φ = 136907188.

The previous prime is 136907153. The next prime is 136907207. The reversal of 136907189 is 981709631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93122500 + 43784689 = 9650^2 + 6617^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136907189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136907389) 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 as a sum of consecutive naturals, namely, 68453594 + 68453595.

It is an arithmetic number, because the mean of its divisors is an integer number (68453595).

Almost surely, 2^136907189 is an apocalyptic number.

It is an amenable number.

136907189 is a deficient number, since it is larger than the sum of its proper divisors (1).

136907189 is an equidigital number, since it uses as much as digits as its factorization.

136907189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 136907189 is about 11700.7345495913. The cubic root of 136907189 is about 515.3972352314.

The spelling of 136907189 in words is "one hundred thirty-six million, nine hundred seven thousand, one hundred eighty-nine".