18110845 has 4 divisors (see below), whose sum is σ = 21733020. Its totient is φ = 14488672.

The previous prime is 18110843. The next prime is 18110861. The reversal of 18110845 is 54801181.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54801181 = 37 ⋅1481113.

It can be written as a sum of positive squares in 2 ways, for example, as 7941124 + 10169721 = 2818^2 + 3189^2 .

It is a cyclic number.

It is not a de Polignac number, because 18110845 - 2¹ = 18110843 is a prime.

It is a super-2 number, since 2×18110845² = 656005413228050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18110843) 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, 1811080 + ... + 1811089.

It is an arithmetic number, because the mean of its divisors is an integer number (5433255).

Almost surely, 2^18110845 is an apocalyptic number.

It is an amenable number.

18110845 is a deficient number, since it is larger than the sum of its proper divisors (3622175).

18110845 is an equidigital number, since it uses as much as digits as its factorization.

18110845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3622174.

The product of its (nonzero) digits is 1280, while the sum is 28.

The square root of 18110845 is about 4255.6838463401. The cubic root of 18110845 is about 262.6109946330.

It can be divided in two parts, 181 and 10845, that added together give a triangular number (11026 = T₁₄₈).

The spelling of 18110845 in words is "eighteen million, one hundred ten thousand, eight hundred forty-five".