136189 has 2 divisors, whose sum is σ = 136190. Its totient is φ = 136188.

The previous prime is 136177. The next prime is 136193. The reversal of 136189 is 981631.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122500 + 13689 = 350^2 + 117^2 .

It is a cyclic number.

It is not a de Polignac number, because 136189 - 2¹³ = 127997 is a prime.

136189 is a lucky number.

It is a plaindrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68094 + 68095.

It is an arithmetic number, because the mean of its divisors is an integer number (68095).

2¹³⁶¹⁸⁹ is an apocalyptic number.

It is an amenable number.

136189 is a deficient number, since it is larger than the sum of its proper divisors (1).

136189 is an equidigital number, since it uses as much as digits as its factorization.

136189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 28.

The square root of 136189 is about 369.0379384291. The cubic root of 136189 is about 51.4494429541.

Subtracting from 136189 its sum of digits (28), we obtain a square (136161 = 369²).

It can be divided in two parts, 136 and 189, that added together give a triangular number (325 = T₂₅).

The spelling of 136189 in words is "one hundred thirty-six thousand, one hundred eighty-nine".