18230105 has 4 divisors (see below), whose sum is σ = 21876132. Its totient is φ = 14584080.

The previous prime is 18230089. The next prime is 18230111. The reversal of 18230105 is 50103281.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50103281 = 1097 ⋅45673.

It can be written as a sum of positive squares in 2 ways, for example, as 5470921 + 12759184 = 2339^2 + 3572^2 .

It is not a de Polignac number, because 18230105 - 2⁴ = 18230089 is a prime.

It is a super-2 number, since 2×18230105² = 664673456622050, which contains 22 as substring.

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, 1823006 + ... + 1823015.

It is an arithmetic number, because the mean of its divisors is an integer number (5469033).

Almost surely, 2^18230105 is an apocalyptic number.

It is an amenable number.

18230105 is a deficient number, since it is larger than the sum of its proper divisors (3646027).

18230105 is an equidigital number, since it uses as much as digits as its factorization.

18230105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3646026.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 18230105 is about 4269.6727040840. The cubic root of 18230105 is about 263.1861655207.

Adding to 18230105 its reverse (50103281), we get a palindrome (68333386).

The spelling of 18230105 in words is "eighteen million, two hundred thirty thousand, one hundred five".