136177909 has 24 divisors (see below), whose sum is σ = 162263040. Its totient is φ = 113926176.

The previous prime is 136177907. The next prime is 136177931. The reversal of 136177909 is 909771631.

It is not a de Polignac number, because 136177909 - 2¹ = 136177907 is a prime.

It is a super-2 number, since 2×136177909² = 37088845799224562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136177901) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 491479 + ... + 491755.

It is an arithmetic number, because the mean of its divisors is an integer number (6760960).

Almost surely, 2^136177909 is an apocalyptic number.

It is an amenable number.

136177909 is a deficient number, since it is larger than the sum of its proper divisors (26085131).

136177909 is a wasteful number, since it uses less digits than its factorization.

136177909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497 (or 490 counting only the distinct ones).

The product of its (nonzero) digits is 71442, while the sum is 43.

The square root of 136177909 is about 11669.5290821867. The cubic root of 136177909 is about 514.4804626453.

The spelling of 136177909 in words is "one hundred thirty-six million, one hundred seventy-seven thousand, nine hundred nine".