12919519 has 2 divisors, whose sum is σ = 12919520. Its totient is φ = 12919518.

The previous prime is 12919513. The next prime is 12919523. The reversal of 12919519 is 91591921.

It is a strong prime.

It is an emirp because it is prime and its reverse (91591921) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12919519 is a prime.

It is a super-2 number, since 2×12919519² = 333827942382722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12919513) 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, 6459759 + 6459760.

It is an arithmetic number, because the mean of its divisors is an integer number (6459760).

Almost surely, 2^12919519 is an apocalyptic number.

12919519 is a deficient number, since it is larger than the sum of its proper divisors (1).

12919519 is an equidigital number, since it uses as much as digits as its factorization.

12919519 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7290, while the sum is 37.

The square root of 12919519 is about 3594.3732416097. The cubic root of 12919519 is about 234.6472389524.

The spelling of 12919519 in words is "twelve million, nine hundred nineteen thousand, five hundred nineteen".