18430113 has 24 divisors (see below), whose sum is σ = 27116544. Its totient is φ = 11067840.

The previous prime is 18430081. The next prime is 18430121. The reversal of 18430113 is 31103481.

It is not a de Polignac number, because 18430113 - 2⁵ = 18430081 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18430113.

It is not an unprimeable number, because it can be changed into a prime (18430123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 145056 + ... + 145182.

It is an arithmetic number, because the mean of its divisors is an integer number (1129856).

Almost surely, 2^18430113 is an apocalyptic number.

18430113 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

18430113 is a deficient number, since it is larger than the sum of its proper divisors (8686431).

18430113 is a wasteful number, since it uses less digits than its factorization.

18430113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265 (or 204 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 18430113 is about 4293.0307476187. The cubic root of 18430113 is about 264.1451652279.

Adding to 18430113 its reverse (31103481), we get a palindrome (49533594).

The spelling of 18430113 in words is "eighteen million, four hundred thirty thousand, one hundred thirteen".