13538189 has 16 divisors (see below), whose sum is σ = 16036608. Its totient is φ = 11187072.

The previous prime is 13538179. The next prime is 13538197. The reversal of 13538189 is 98183531.

It is a cyclic number.

It is not a de Polignac number, because 13538189 - 2²⁰ = 12489613 is a prime.

It is a super-2 number, since 2×13538189² = 366565122799442, which contains 22 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43097 + ... + 43409.

It is an arithmetic number, because the mean of its divisors is an integer number (1002288).

Almost surely, 2^13538189 is an apocalyptic number.

It is an amenable number.

13538189 is a deficient number, since it is larger than the sum of its proper divisors (2498419).

13538189 is a wasteful number, since it uses less digits than its factorization.

13538189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524.

The product of its digits is 25920, while the sum is 38.

The square root of 13538189 is about 3679.4278087768. The cubic root of 13538189 is about 238.3344695965.

It can be divided in two parts, 135 and 38189, that multiplied together give a palindrome (5155515).

The spelling of 13538189 in words is "thirteen million, five hundred thirty-eight thousand, one hundred eighty-nine".