13338191 has 4 divisors (see below), whose sum is σ = 13467792. Its totient is φ = 13208592.

The previous prime is 13338151. The next prime is 13338197. The reversal of 13338191 is 19183331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19183331 = 19 ⋅1009649.

It is a cyclic number.

It is not a de Polignac number, because 13338191 - 2¹⁰ = 13337167 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 (13338197) 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 3 ways as a sum of consecutive naturals, for example, 64646 + ... + 64851.

It is an arithmetic number, because the mean of its divisors is an integer number (3366948).

Almost surely, 2^13338191 is an apocalyptic number.

13338191 is a deficient number, since it is larger than the sum of its proper divisors (129601).

13338191 is a wasteful number, since it uses less digits than its factorization.

13338191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129600.

The product of its digits is 1944, while the sum is 29.

The square root of 13338191 is about 3652.1488195308. The cubic root of 13338191 is about 237.1550138063.

The spelling of 13338191 in words is "thirteen million, three hundred thirty-eight thousand, one hundred ninety-one".