13813963 has 2 divisors, whose sum is σ = 13813964. Its totient is φ = 13813962.

The previous prime is 13813951. The next prime is 13813991. The reversal of 13813963 is 36931831.

13813963 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13813963 - 2⁹ = 13813451 is a prime.

It is not a weakly prime, because it can be changed into another prime (13813903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6906981 + 6906982.

It is an arithmetic number, because the mean of its divisors is an integer number (6906982).

Almost surely, 2^13813963 is an apocalyptic number.

13813963 is a deficient number, since it is larger than the sum of its proper divisors (1).

13813963 is an equidigital number, since it uses as much as digits as its factorization.

13813963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 34.

The square root of 13813963 is about 3716.7140056776. The cubic root of 13813963 is about 239.9419014461.

The spelling of 13813963 in words is "thirteen million, eight hundred thirteen thousand, nine hundred sixty-three".