13138365 has 32 divisors (see below), whose sum is σ = 22619520. Its totient is φ = 6488064.

The previous prime is 13138357. The next prime is 13138369. The reversal of 13138365 is 56383131.

It is not a de Polignac number, because 13138365 - 2³ = 13138357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13138369) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16701 + ... + 17469.

It is an arithmetic number, because the mean of its divisors is an integer number (706860).

Almost surely, 2^13138365 is an apocalyptic number.

13138365 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13138365 is a deficient number, since it is larger than the sum of its proper divisors (9481155).

13138365 is a wasteful number, since it uses less digits than its factorization.

13138365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861.

The product of its digits is 6480, while the sum is 30.

The square root of 13138365 is about 3624.6882624579. The cubic root of 13138365 is about 235.9647378609.

The spelling of 13138365 in words is "thirteen million, one hundred thirty-eight thousand, three hundred sixty-five".