12365813 has 2 divisors, whose sum is σ = 12365814. Its totient is φ = 12365812.

The previous prime is 12365797. The next prime is 12365819. The reversal of 12365813 is 31856321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10745284 + 1620529 = 3278^2 + 1273^2 .

It is a cyclic number.

It is not a de Polignac number, because 12365813 - 2⁴ = 12365797 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12365819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6182906 + 6182907.

It is an arithmetic number, because the mean of its divisors is an integer number (6182907).

Almost surely, 2^12365813 is an apocalyptic number.

It is an amenable number.

12365813 is a deficient number, since it is larger than the sum of its proper divisors (1).

12365813 is an equidigital number, since it uses as much as digits as its factorization.

12365813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 29.

The square root of 12365813 is about 3516.5057941087. The cubic root of 12365813 is about 231.2459976907.

The spelling of 12365813 in words is "twelve million, three hundred sixty-five thousand, eight hundred thirteen".