13518939 has 16 divisors (see below), whose sum is σ = 21040128. Its totient is φ = 7560192.

The previous prime is 13518887. The next prime is 13518977. The reversal of 13518939 is 93981531.

13518939 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13518939 - 2⁷ = 13518811 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13518897 and 13518906.

It is not an unprimeable number, because it can be changed into a prime (13518979) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5862 + ... + 7835.

It is an arithmetic number, because the mean of its divisors is an integer number (1315008).

Almost surely, 2^13518939 is an apocalyptic number.

13518939 is a deficient number, since it is larger than the sum of its proper divisors (7521189).

13518939 is a wasteful number, since it uses less digits than its factorization.

13518939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13754.

The product of its digits is 29160, while the sum is 39.

The square root of 13518939 is about 3676.8109823596. The cubic root of 13518939 is about 238.2214531313.

The spelling of 13518939 in words is "thirteen million, five hundred eighteen thousand, nine hundred thirty-nine".