13385819 has 2 divisors, whose sum is σ = 13385820. Its totient is φ = 13385818.

The previous prime is 13385809. The next prime is 13385821. The reversal of 13385819 is 91858331.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13385819 is a prime.

It is a super-2 number, since 2×13385819² = 358360300601522, which contains 22 as substring.

Together with 13385821, 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 (13385809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6692909 + 6692910.

It is an arithmetic number, because the mean of its divisors is an integer number (6692910).

Almost surely, 2^13385819 is an apocalyptic number.

13385819 is a deficient number, since it is larger than the sum of its proper divisors (1).

13385819 is an equidigital number, since it uses as much as digits as its factorization.

13385819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 38.

The square root of 13385819 is about 3658.6635538131. The cubic root of 13385819 is about 237.4369561198.

The spelling of 13385819 in words is "thirteen million, three hundred eighty-five thousand, eight hundred nineteen".