13138769 has 16 divisors (see below), whose sum is σ = 15811200. Its totient is φ = 10679424.

The previous prime is 13138757. The next prime is 13138771. The reversal of 13138769 is 96783131.

13138769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-13138769 is a prime.

It is a super-2 number, since 2×13138769² = 345254501670722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13138789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11429 + ... + 12525.

It is an arithmetic number, because the mean of its divisors is an integer number (988200).

Almost surely, 2^13138769 is an apocalyptic number.

It is an amenable number.

13138769 is a deficient number, since it is larger than the sum of its proper divisors (2672431).

13138769 is a wasteful number, since it uses less digits than its factorization.

13138769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192.

The product of its digits is 27216, while the sum is 38.

The square root of 13138769 is about 3624.7439909599. The cubic root of 13138769 is about 235.9671564464.

The spelling of 13138769 in words is "thirteen million, one hundred thirty-eight thousand, seven hundred sixty-nine".