12738169 has 2 divisors, whose sum is σ = 12738170. Its totient is φ = 12738168.

The previous prime is 12738157. The next prime is 12738211. The reversal of 12738169 is 96183721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9363600 + 3374569 = 3060^2 + 1837^2 .

It is an emirp because it is prime and its reverse (96183721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12738169 - 2¹⁵ = 12705401 is a prime.

It is a super-2 number, since 2×12738169² = 324521898945122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12738119) 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, 6369084 + 6369085.

It is an arithmetic number, because the mean of its divisors is an integer number (6369085).

Almost surely, 2^12738169 is an apocalyptic number.

It is an amenable number.

12738169 is a deficient number, since it is larger than the sum of its proper divisors (1).

12738169 is an equidigital number, since it uses as much as digits as its factorization.

12738169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 37.

The square root of 12738169 is about 3569.0571584103. The cubic root of 12738169 is about 233.5441548126.

The spelling of 12738169 in words is "twelve million, seven hundred thirty-eight thousand, one hundred sixty-nine".