18110189 has 4 divisors (see below), whose sum is σ = 18152640. Its totient is φ = 18067740.

The previous prime is 18110179. The next prime is 18110201. The reversal of 18110189 is 98101181.

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.

It is a cyclic number.

It is not a de Polignac number, because 18110189 - 2¹² = 18106093 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 (18110119) 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, 20579 + ... + 21440.

It is an arithmetic number, because the mean of its divisors is an integer number (4538160).

Almost surely, 2^18110189 is an apocalyptic number.

It is an amenable number.

18110189 is a deficient number, since it is larger than the sum of its proper divisors (42451).

18110189 is an equidigital number, since it uses as much as digits as its factorization.

18110189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42450.

The product of its (nonzero) digits is 576, while the sum is 29.

The square root of 18110189 is about 4255.6067722476. The cubic root of 18110189 is about 262.6078238828.

The spelling of 18110189 in words is "eighteen million, one hundred ten thousand, one hundred eighty-nine".