12919619 has 2 divisors, whose sum is σ = 12919620. Its totient is φ = 12919618.

The previous prime is 12919597. The next prime is 12919637. The reversal of 12919619 is 91691921.

12919619 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (91691921) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12919619 is a prime.

It is a super-2 number, since 2×12919619² = 333833110210322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12919649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6459809 + 6459810.

It is an arithmetic number, because the mean of its divisors is an integer number (6459810).

Almost surely, 2^12919619 is an apocalyptic number.

12919619 is a deficient number, since it is larger than the sum of its proper divisors (1).

12919619 is an equidigital number, since it uses as much as digits as its factorization.

12919619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8748, while the sum is 38.

The square root of 12919619 is about 3594.3871522139. The cubic root of 12919619 is about 234.6478443585.

The spelling of 12919619 in words is "twelve million, nine hundred nineteen thousand, six hundred nineteen".