13538109 has 8 divisors (see below), whose sum is σ = 19439392. Its totient is φ = 8331120.

The previous prime is 13538093. The next prime is 13538111. The reversal of 13538109 is 90183531.

It is a happy number.

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

It is not a de Polignac number, because 13538109 - 2⁴ = 13538093 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13538179) 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, 173527 + ... + 173604.

It is an arithmetic number, because the mean of its divisors is an integer number (2429924).

Almost surely, 2^13538109 is an apocalyptic number.

It is an amenable number.

13538109 is a deficient number, since it is larger than the sum of its proper divisors (5901283).

13538109 is a wasteful number, since it uses less digits than its factorization.

13538109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347147.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 13538109 is about 3679.4169375052. The cubic root of 13538109 is about 238.3340001394.

The spelling of 13538109 in words is "thirteen million, five hundred thirty-eight thousand, one hundred nine".