13081189 has 6 divisors (see below), whose sum is σ = 14378630. Its totient is φ = 11891880.

The previous prime is 13081183. The next prime is 13081193. The reversal of 13081189 is 98118031.

It can be written as a sum of positive squares in only one way, i.e., 7745089 + 5336100 = 2783^2 + 2310^2 .

It is not a de Polignac number, because 13081189 - 2¹¹ = 13079141 is a prime.

It is a super-2 number, since 2×13081189² = 342235011307442, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13081189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13081183) 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 5 ways as a sum of consecutive naturals, for example, 53934 + ... + 54175.

Almost surely, 2^13081189 is an apocalyptic number.

It is an amenable number.

13081189 is a deficient number, since it is larger than the sum of its proper divisors (1297441).

13081189 is a wasteful number, since it uses less digits than its factorization.

13081189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108131 (or 108120 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 31.

The square root of 13081189 is about 3616.7926398952. The cubic root of 13081189 is about 235.6219469007.

The spelling of 13081189 in words is "thirteen million, eighty-one thousand, one hundred eighty-nine".