13013539 has 8 divisors (see below), whose sum is σ = 16224768. Its totient is φ = 10140360.

The previous prime is 13013527. The next prime is 13013543. The reversal of 13013539 is 93531031.

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 13013539 - 2⁹ = 13013027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13013509) 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, 84427 + ... + 84580.

It is an arithmetic number, because the mean of its divisors is an integer number (2028096).

Almost surely, 2^13013539 is an apocalyptic number.

13013539 is a deficient number, since it is larger than the sum of its proper divisors (3211229).

13013539 is a wasteful number, since it uses less digits than its factorization.

13013539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169025.

The product of its (nonzero) digits is 1215, while the sum is 25.

The square root of 13013539 is about 3607.4283083659. The cubic root of 13013539 is about 235.2150679392.

The spelling of 13013539 in words is "thirteen million, thirteen thousand, five hundred thirty-nine".