136618193 has 2 divisors, whose sum is σ = 136618194. Its totient is φ = 136618192.

The previous prime is 136618169. The next prime is 136618199. The reversal of 136618193 is 391816631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124701889 + 11916304 = 11167^2 + 3452^2 .

It is a cyclic number.

It is not a de Polignac number, because 136618193 - 2¹⁴ = 136601809 is a prime.

It is not a weakly prime, because it can be changed into another prime (136618199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68309096 + 68309097.

It is an arithmetic number, because the mean of its divisors is an integer number (68309097).

Almost surely, 2^136618193 is an apocalyptic number.

It is an amenable number.

136618193 is a deficient number, since it is larger than the sum of its proper divisors (1).

136618193 is an equidigital number, since it uses as much as digits as its factorization.

136618193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 38.

The square root of 136618193 is about 11688.3785445202. The cubic root of 136618193 is about 515.0343308248.

The spelling of 136618193 in words is "one hundred thirty-six million, six hundred eighteen thousand, one hundred ninety-three".