13189191 has 4 divisors (see below), whose sum is σ = 17585592. Its totient is φ = 8792792.

The previous prime is 13189157. The next prime is 13189201. The reversal of 13189191 is 19198131.

It is a happy number.

13189191 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19198131 = 3 ⋅6399377.

It is a cyclic number.

It is not a de Polignac number, because 13189191 - 2⁷ = 13189063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13189091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2198196 + ... + 2198201.

It is an arithmetic number, because the mean of its divisors is an integer number (4396398).

Almost surely, 2^13189191 is an apocalyptic number.

13189191 is a deficient number, since it is larger than the sum of its proper divisors (4396401).

13189191 is an equidigital number, since it uses as much as digits as its factorization.

13189191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4396400.

The product of its digits is 1944, while the sum is 33.

The square root of 13189191 is about 3631.6925806021. The cubic root of 13189191 is about 236.2686242701.

The spelling of 13189191 in words is "thirteen million, one hundred eighty-nine thousand, one hundred ninety-one".