136389173 has 2 divisors, whose sum is σ = 136389174. Its totient is φ = 136389172.

The previous prime is 136389167. The next prime is 136389191. The reversal of 136389173 is 371983631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135094129 + 1295044 = 11623^2 + 1138^2 .

It is an emirp because it is prime and its reverse (371983631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 136389173 - 2⁴ = 136389157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 136389173.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136389073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68194586 + 68194587.

It is an arithmetic number, because the mean of its divisors is an integer number (68194587).

Almost surely, 2^136389173 is an apocalyptic number.

It is an amenable number.

136389173 is a deficient number, since it is larger than the sum of its proper divisors (1).

136389173 is an equidigital number, since it uses as much as digits as its factorization.

136389173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 41.

The square root of 136389173 is about 11678.5775246817. The cubic root of 136389173 is about 514.7463771450.

The spelling of 136389173 in words is "one hundred thirty-six million, three hundred eighty-nine thousand, one hundred seventy-three".