18075489 has 4 divisors (see below), whose sum is σ = 24100656. Its totient is φ = 12050324.

The previous prime is 18075481. The next prime is 18075503. The reversal of 18075489 is 98457081.

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 18075489 - 2³ = 18075481 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18075489.

It is not an unprimeable number, because it can be changed into a prime (18075481) 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, 3012579 + ... + 3012584.

It is an arithmetic number, because the mean of its divisors is an integer number (6025164).

Almost surely, 2^18075489 is an apocalyptic number.

It is an amenable number.

18075489 is a deficient number, since it is larger than the sum of its proper divisors (6025167).

18075489 is an equidigital number, since it uses as much as digits as its factorization.

18075489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6025166.

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

The square root of 18075489 is about 4251.5278430230. The cubic root of 18075489 is about 262.4399935400.

The spelling of 18075489 in words is "eighteen million, seventy-five thousand, four hundred eighty-nine".