18051089 has 8 divisors (see below), whose sum is σ = 20879040. Its totient is φ = 15285456.

The previous prime is 18051071. The next prime is 18051101. The reversal of 18051089 is 98015081.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18051089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18051289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14954 + ... + 16115.

It is an arithmetic number, because the mean of its divisors is an integer number (2609880).

Almost surely, 2^18051089 is an apocalyptic number.

It is an amenable number.

18051089 is a deficient number, since it is larger than the sum of its proper divisors (2827951).

18051089 is an equidigital number, since it uses as much as digits as its factorization.

18051089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31159.

The product of its (nonzero) digits is 2880, while the sum is 32.

The square root of 18051089 is about 4248.6573173180. The cubic root of 18051089 is about 262.3218516118.

The spelling of 18051089 in words is "eighteen million, fifty-one thousand, eighty-nine".