13630913 has 2 divisors, whose sum is σ = 13630914. Its totient is φ = 13630912.

The previous prime is 13630909. The next prime is 13630919. The reversal of 13630913 is 31903631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13630864 + 49 = 3692^2 + 7^2 .

It is a cyclic number.

It is not a de Polignac number, because 13630913 - 2² = 13630909 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13630919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6815456 + 6815457.

It is an arithmetic number, because the mean of its divisors is an integer number (6815457).

Almost surely, 2^13630913 is an apocalyptic number.

It is an amenable number.

13630913 is a deficient number, since it is larger than the sum of its proper divisors (1).

13630913 is an equidigital number, since it uses as much as digits as its factorization.

13630913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458, while the sum is 26.

The square root of 13630913 is about 3692.0066359637. The cubic root of 13630913 is about 238.8773551870.

The spelling of 13630913 in words is "thirteen million, six hundred thirty thousand, nine hundred thirteen".