12636149 has 2 divisors, whose sum is σ = 12636150. Its totient is φ = 12636148.

The previous prime is 12636139. The next prime is 12636163. The reversal of 12636149 is 94163621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7263025 + 5373124 = 2695^2 + 2318^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12636149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12636139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6318074 + 6318075.

It is an arithmetic number, because the mean of its divisors is an integer number (6318075).

Almost surely, 2^12636149 is an apocalyptic number.

It is an amenable number.

12636149 is a deficient number, since it is larger than the sum of its proper divisors (1).

12636149 is an equidigital number, since it uses as much as digits as its factorization.

12636149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 32.

The square root of 12636149 is about 3554.7361364805. The cubic root of 12636149 is about 232.9189977966.

The spelling of 12636149 in words is "twelve million, six hundred thirty-six thousand, one hundred forty-nine".