11189 has 4 divisors (see below), whose sum is σ = 11424. Its totient is φ = 10956.

The previous prime is 11177. The next prime is 11197. The reversal of 11189 is 98111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98111 = 13 ⋅7547.

It is a cyclic number.

It is not a de Polignac number, because 11189 - 2⁴ = 11173 is a prime.

It is a Duffinian number.

It is a plaindrome in base 6, base 10 and base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 11189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11119) 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, 17 + ... + 150.

It is an arithmetic number, because the mean of its divisors is an integer number (2856).

2¹¹¹⁸⁹ is an apocalyptic number.

It is an amenable number.

11189 is a deficient number, since it is larger than the sum of its proper divisors (235).

11189 is an equidigital number, since it uses as much as digits as its factorization.

11189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234.

The product of its digits is 72, while the sum is 20.

The square root of 11189 is about 105.7780695608. The cubic root of 11189 is about 22.3664516933.

The spelling of 11189 in words is "eleven thousand, one hundred eighty-nine".