13438191 has 12 divisors (see below), whose sum is σ = 19328792. Its totient is φ = 8255568.

The previous prime is 13438189. The next prime is 13438207. The reversal of 13438191 is 19183431.

It is not a de Polignac number, because 13438191 - 2¹ = 13438189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13438171) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22600 + ... + 23186.

Almost surely, 2^13438191 is an apocalyptic number.

13438191 is a deficient number, since it is larger than the sum of its proper divisors (5890601).

13438191 is an frugal number, since it uses more digits than its factorization.

13438191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1190 (or 603 counting only the distinct ones).

The product of its digits is 2592, while the sum is 30.

The square root of 13438191 is about 3665.8138250599. The cubic root of 13438191 is about 237.7462104148.

The spelling of 13438191 in words is "thirteen million, four hundred thirty-eight thousand, one hundred ninety-one".