12738361 has 2 divisors, whose sum is σ = 12738362. Its totient is φ = 12738360.

The previous prime is 12738353. The next prime is 12738367. The reversal of 12738361 is 16383721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12467961 + 270400 = 3531^2 + 520^2 .

It is an emirp because it is prime and its reverse (16383721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12738361 - 2³ = 12738353 is a prime.

It is not a weakly prime, because it can be changed into another prime (12738367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6369180 + 6369181.

It is an arithmetic number, because the mean of its divisors is an integer number (6369181).

Almost surely, 2^12738361 is an apocalyptic number.

It is an amenable number.

12738361 is a deficient number, since it is larger than the sum of its proper divisors (1).

12738361 is an equidigital number, since it uses as much as digits as its factorization.

12738361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 31.

The square root of 12738361 is about 3569.0840561690. The cubic root of 12738361 is about 233.5453281955.

The spelling of 12738361 in words is "twelve million, seven hundred thirty-eight thousand, three hundred sixty-one".