136138786 has 16 divisors (see below), whose sum is σ = 233530560. Its totient is φ = 58307760.

The previous prime is 136138759. The next prime is 136138787. The reversal of 136138786 is 687831631.

It is not an unprimeable number, because it can be changed into a prime (136138787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40656 + ... + 43876.

It is an arithmetic number, because the mean of its divisors is an integer number (14595660).

Almost surely, 2^136138786 is an apocalyptic number.

136138786 is a deficient number, since it is larger than the sum of its proper divisors (97391774).

136138786 is a wasteful number, since it uses less digits than its factorization.

136138786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6249.

The product of its digits is 145152, while the sum is 43.

The square root of 136138786 is about 11667.8526730500. The cubic root of 136138786 is about 514.4311889974.

The spelling of 136138786 in words is "one hundred thirty-six million, one hundred thirty-eight thousand, seven hundred eighty-six".