13812919 has 2 divisors, whose sum is σ = 13812920. Its totient is φ = 13812918.

The previous prime is 13812907. The next prime is 13812977. The reversal of 13812919 is 91921831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13812919 - 2¹⁹ = 13288631 is a prime.

It is a super-2 number, since 2×13812919² = 381593462601122, which contains 22 as substring.

It is equal to p₈₉₈₇₂₀ and since 13812919 and 898720 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13812989) 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, 6906459 + 6906460.

It is an arithmetic number, because the mean of its divisors is an integer number (6906460).

Almost surely, 2^13812919 is an apocalyptic number.

13812919 is a deficient number, since it is larger than the sum of its proper divisors (1).

13812919 is an equidigital number, since it uses as much as digits as its factorization.

13812919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 34.

The square root of 13812919 is about 3716.5735563823. The cubic root of 13812919 is about 239.9358567009.

The spelling of 13812919 in words is "thirteen million, eight hundred twelve thousand, nine hundred nineteen".