11005189 has 8 divisors (see below), whose sum is σ = 11879672. Its totient is φ = 10134720.

The previous prime is 11005177. The next prime is 11005207. The reversal of 11005189 is 98150011.

11005189 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 390625 + 10614564 = 625^2 + 3258^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11005189 - 2⁵ = 11005157 is a prime.

It is a super-2 number, since 2×11005189² = 242228369851442, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11000189) 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 7 ways as a sum of consecutive naturals, for example, 7279 + ... + 8659.

It is an arithmetic number, because the mean of its divisors is an integer number (1484959).

Almost surely, 2^11005189 is an apocalyptic number.

It is an amenable number.

11005189 is a deficient number, since it is larger than the sum of its proper divisors (874483).

11005189 is a wasteful number, since it uses less digits than its factorization.

11005189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2007.

The product of its (nonzero) digits is 360, while the sum is 25.

The square root of 11005189 is about 3317.4069693060. The cubic root of 11005189 is about 222.4329739616.

The spelling of 11005189 in words is "eleven million, five thousand, one hundred eighty-nine".