13519985 has 16 divisors (see below), whose sum is σ = 16842816. Its totient is φ = 10410048.

The previous prime is 13519969. The next prime is 13519993. The reversal of 13519985 is 58991531.

13519985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 13519985 - 2⁴ = 13519969 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19454 + ... + 20136.

It is an arithmetic number, because the mean of its divisors is an integer number (1052676).

Almost surely, 2^13519985 is an apocalyptic number.

It is an amenable number.

13519985 is a deficient number, since it is larger than the sum of its proper divisors (3322831).

13519985 is a wasteful number, since it uses less digits than its factorization.

13519985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832.

The product of its digits is 48600, while the sum is 41.

The square root of 13519985 is about 3676.9532224384. The cubic root of 13519985 is about 238.2275969373.

The spelling of 13519985 in words is "thirteen million, five hundred nineteen thousand, nine hundred eighty-five".