13149613 has 4 divisors (see below), whose sum is σ = 13429440. Its totient is φ = 12869788.

The previous prime is 13149601. The next prime is 13149623. The reversal of 13149613 is 31694131.

13149613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13149613 - 2⁵ = 13149581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13149623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139843 + ... + 139936.

It is an arithmetic number, because the mean of its divisors is an integer number (3357360).

Almost surely, 2^13149613 is an apocalyptic number.

It is an amenable number.

13149613 is a deficient number, since it is larger than the sum of its proper divisors (279827).

13149613 is an equidigital number, since it uses as much as digits as its factorization.

13149613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279826.

The product of its digits is 1944, while the sum is 28.

The square root of 13149613 is about 3626.2395122220. The cubic root of 13149613 is about 236.0320565954.

The spelling of 13149613 in words is "thirteen million, one hundred forty-nine thousand, six hundred thirteen".