18089755 has 4 divisors (see below), whose sum is σ = 21707712. Its totient is φ = 14471800.

The previous prime is 18089737. The next prime is 18089789. The reversal of 18089755 is 55798081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55798081 = 109 ⋅511909.

It is not a de Polignac number, because 18089755 - 2⁵ = 18089723 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1808971 + ... + 1808980.

It is an arithmetic number, because the mean of its divisors is an integer number (5426928).

Almost surely, 2^18089755 is an apocalyptic number.

18089755 is a deficient number, since it is larger than the sum of its proper divisors (3617957).

18089755 is an equidigital number, since it uses as much as digits as its factorization.

18089755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3617956.

The product of its (nonzero) digits is 100800, while the sum is 43.

The square root of 18089755 is about 4253.2052619172. The cubic root of 18089755 is about 262.5090185866.

The spelling of 18089755 in words is "eighteen million, eighty-nine thousand, seven hundred fifty-five".