13800019 has 2 divisors, whose sum is σ = 13800020. Its totient is φ = 13800018.

The previous prime is 13800013. The next prime is 13800049. The reversal of 13800019 is 91000831.

It is a weak prime.

It is an emirp because it is prime and its reverse (91000831) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13800019 is a prime.

It is a super-2 number, since 2×13800019² = 380881048800722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13800013) 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, 6900009 + 6900010.

It is an arithmetic number, because the mean of its divisors is an integer number (6900010).

Almost surely, 2^13800019 is an apocalyptic number.

13800019 is a deficient number, since it is larger than the sum of its proper divisors (1).

13800019 is an equidigital number, since it uses as much as digits as its factorization.

13800019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 13800019 is about 3714.8376815145. The cubic root of 13800019 is about 239.8611407391.

The spelling of 13800019 in words is "thirteen million, eight hundred thousand, nineteen".