136164737 has 4 divisors (see below), whose sum is σ = 137805360. Its totient is φ = 134524116.

The previous prime is 136164733. The next prime is 136164757. The reversal of 136164737 is 737461631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 737461631 = 47 ⋅15690673.

It is a cyclic number.

It is not a de Polignac number, because 136164737 - 2² = 136164733 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 136164737.

It is not an unprimeable number, because it can be changed into a prime (136164733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 820187 + ... + 820352.

It is an arithmetic number, because the mean of its divisors is an integer number (34451340).

Almost surely, 2^136164737 is an apocalyptic number.

It is an amenable number.

136164737 is a deficient number, since it is larger than the sum of its proper divisors (1640623).

136164737 is an equidigital number, since it uses as much as digits as its factorization.

136164737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1640622.

The product of its digits is 63504, while the sum is 38.

The square root of 136164737 is about 11668.9646927223. The cubic root of 136164737 is about 514.4638741614.

The spelling of 136164737 in words is "one hundred thirty-six million, one hundred sixty-four thousand, seven hundred thirty-seven".