12736819 has 2 divisors, whose sum is σ = 12736820. Its totient is φ = 12736818.

The previous prime is 12736817. The next prime is 12736837. The reversal of 12736819 is 91863721.

It is a weak prime.

It is an emirp because it is prime and its reverse (91863721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12736819 - 2¹ = 12736817 is a prime.

It is a super-2 number, since 2×12736819² = 324453116477522, which contains 22 as substring.

Together with 12736817, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12736811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6368409 + 6368410.

It is an arithmetic number, because the mean of its divisors is an integer number (6368410).

Almost surely, 2^12736819 is an apocalyptic number.

12736819 is a deficient number, since it is larger than the sum of its proper divisors (1).

12736819 is an equidigital number, since it uses as much as digits as its factorization.

12736819 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 12736819 is about 3568.8680278206. The cubic root of 12736819 is about 233.5359041305.

The spelling of 12736819 in words is "twelve million, seven hundred thirty-six thousand, eight hundred nineteen".