11591189 has 2 divisors, whose sum is σ = 11591190. Its totient is φ = 11591188.

The previous prime is 11591183. The next prime is 11591191. The reversal of 11591189 is 98119511.

11591189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6604900 + 4986289 = 2570^2 + 2233^2 .

It is a cyclic number.

It is not a de Polignac number, because 11591189 - 2²⁰ = 10542613 is a prime.

Together with 11591191, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11591183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5795594 + 5795595.

It is an arithmetic number, because the mean of its divisors is an integer number (5795595).

Almost surely, 2^11591189 is an apocalyptic number.

It is an amenable number.

11591189 is a deficient number, since it is larger than the sum of its proper divisors (1).

11591189 is an equidigital number, since it uses as much as digits as its factorization.

11591189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 35.

The square root of 11591189 is about 3404.5835281279. The cubic root of 11591189 is about 226.3129100722.

The spelling of 11591189 in words is "eleven million, five hundred ninety-one thousand, one hundred eighty-nine".