12164819 has 2 divisors, whose sum is σ = 12164820. Its totient is φ = 12164818.

The previous prime is 12164813. The next prime is 12164821. The reversal of 12164819 is 91846121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12164819 is a prime.

It is a super-2 number, since 2×12164819² = 295965642605522, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 12164821, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12164813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6082409 + 6082410.

It is an arithmetic number, because the mean of its divisors is an integer number (6082410).

Almost surely, 2^12164819 is an apocalyptic number.

12164819 is a deficient number, since it is larger than the sum of its proper divisors (1).

12164819 is an equidigital number, since it uses as much as digits as its factorization.

12164819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 32.

The square root of 12164819 is about 3487.8100579017. The cubic root of 12164819 is about 229.9862562676.

The spelling of 12164819 in words is "twelve million, one hundred sixty-four thousand, eight hundred nineteen".