18088045 has 4 divisors (see below), whose sum is σ = 21705660. Its totient is φ = 14470432.

The previous prime is 18088039. The next prime is 18088061. The reversal of 18088045 is 54088081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54088081 = 103 ⋅525127.

It can be written as a sum of positive squares in 2 ways, for example, as 6487209 + 11600836 = 2547^2 + 3406^2 .

It is a cyclic number.

It is not a de Polignac number, because 18088045 - 2⁹ = 18087533 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18088045.

It is a congruent 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, 1808800 + ... + 1808809.

It is an arithmetic number, because the mean of its divisors is an integer number (5426415).

Almost surely, 2^18088045 is an apocalyptic number.

It is an amenable number.

18088045 is a deficient number, since it is larger than the sum of its proper divisors (3617615).

18088045 is an equidigital number, since it uses as much as digits as its factorization.

18088045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3617614.

The product of its (nonzero) digits is 10240, while the sum is 34.

The square root of 18088045 is about 4253.0042323045. The cubic root of 18088045 is about 262.5007467855.

The spelling of 18088045 in words is "eighteen million, eighty-eight thousand, forty-five".