18088115 has 4 divisors (see below), whose sum is σ = 21705744. Its totient is φ = 14470488.

The previous prime is 18088099. The next prime is 18088121. The reversal of 18088115 is 51188081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51188081 = 7 ⋅7312583.

It is a cyclic number.

It is not a de Polignac number, because 18088115 - 2⁴ = 18088099 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, 1808807 + ... + 1808816.

It is an arithmetic number, because the mean of its divisors is an integer number (5426436).

Almost surely, 2^18088115 is an apocalyptic number.

18088115 is a deficient number, since it is larger than the sum of its proper divisors (3617629).

18088115 is an equidigital number, since it uses as much as digits as its factorization.

18088115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3617628.

The product of its (nonzero) digits is 2560, while the sum is 32.

The square root of 18088115 is about 4253.0124617734. The cubic root of 18088115 is about 262.5010854075.

The spelling of 18088115 in words is "eighteen million, eighty-eight thousand, one hundred fifteen".