136539836 has 12 divisors (see below), whose sum is σ = 242511528. Its totient is φ = 67250832.

The previous prime is 136539829. The next prime is 136539847. The reversal of 136539836 is 638935631.

136539836 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 254471 + ... + 255006.

It is an arithmetic number, because the mean of its divisors is an integer number (20209294).

Almost surely, 2^136539836 is an apocalyptic number.

It is an amenable number.

136539836 is a deficient number, since it is larger than the sum of its proper divisors (105971692).

136539836 is a wasteful number, since it uses less digits than its factorization.

136539836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509548 (or 509546 counting only the distinct ones).

The product of its digits is 349920, while the sum is 44.

The square root of 136539836 is about 11685.0261446006. The cubic root of 136539836 is about 514.9358464719.

The spelling of 136539836 in words is "one hundred thirty-six million, five hundred thirty-nine thousand, eight hundred thirty-six".