136722189 has 16 divisors (see below), whose sum is σ = 190674432. Its totient is φ = 86977968.

The previous prime is 136722163. The next prime is 136722197. The reversal of 136722189 is 981227631.

It is not a de Polignac number, because 136722189 - 2⁸ = 136721933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136722149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30102 + ... + 34344.

It is an arithmetic number, because the mean of its divisors is an integer number (11917152).

Almost surely, 2^136722189 is an apocalyptic number.

It is an amenable number.

136722189 is a deficient number, since it is larger than the sum of its proper divisors (53952243).

136722189 is a wasteful number, since it uses less digits than its factorization.

136722189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4736.

The product of its digits is 36288, while the sum is 39.

The square root of 136722189 is about 11692.8263905696. The cubic root of 136722189 is about 515.1649818609.

The spelling of 136722189 in words is "one hundred thirty-six million, seven hundred twenty-two thousand, one hundred eighty-nine".