13901819 has 2 divisors, whose sum is σ = 13901820. Its totient is φ = 13901818.

The previous prime is 13901803. The next prime is 13901827. The reversal of 13901819 is 91810931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13901819 - 2⁴ = 13901803 is a prime.

It is a super-2 number, since 2×13901819² = 386521143017522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13900819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6950909 + 6950910.

It is an arithmetic number, because the mean of its divisors is an integer number (6950910).

Almost surely, 2^13901819 is an apocalyptic number.

13901819 is a deficient number, since it is larger than the sum of its proper divisors (1).

13901819 is an equidigital number, since it uses as much as digits as its factorization.

13901819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 32.

The square root of 13901819 is about 3728.5143153809. The cubic root of 13901819 is about 240.4494990372.

The spelling of 13901819 in words is "thirteen million, nine hundred one thousand, eight hundred nineteen".