13643913 has 8 divisors (see below), whose sum is σ = 18209088. Its totient is φ = 9087344.

The previous prime is 13643879. The next prime is 13643921. The reversal of 13643913 is 31934631.

13643913 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13643913 - 2¹⁴ = 13627529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13643933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4420 + ... + 6842.

It is an arithmetic number, because the mean of its divisors is an integer number (2276136).

Almost surely, 2^13643913 is an apocalyptic number.

It is an amenable number.

13643913 is a deficient number, since it is larger than the sum of its proper divisors (4565175).

13643913 is a wasteful number, since it uses less digits than its factorization.

13643913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4303.

The product of its digits is 5832, while the sum is 30.

The square root of 13643913 is about 3693.7667766116. The cubic root of 13643913 is about 238.9532713274.

The spelling of 13643913 in words is "thirteen million, six hundred forty-three thousand, nine hundred thirteen".