18475089 has 16 divisors (see below), whose sum is σ = 25300992. Its totient is φ = 11986128.

The previous prime is 18475081. The next prime is 18475091. The reversal of 18475089 is 98057481.

It is not a de Polignac number, because 18475089 - 2³ = 18475081 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18475089.

It is not an unprimeable number, because it can be changed into a prime (18475081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39672 + ... + 40134.

It is an arithmetic number, because the mean of its divisors is an integer number (1581312).

Almost surely, 2^18475089 is an apocalyptic number.

It is an amenable number.

18475089 is a deficient number, since it is larger than the sum of its proper divisors (6825903).

18475089 is a wasteful number, since it uses less digits than its factorization.

18475089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796.

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 18475089 is about 4298.2658130925. The cubic root of 18475089 is about 264.3598599158.

The spelling of 18475089 in words is "eighteen million, four hundred seventy-five thousand, eighty-nine".