18481113 has 12 divisors (see below), whose sum is σ = 30508608. Its totient is φ = 10560600.

The previous prime is 18481097. The next prime is 18481157. The reversal of 18481113 is 31118481.

It is not a de Polignac number, because 18481113 - 2⁴ = 18481097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18481913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 146613 + ... + 146738.

It is an arithmetic number, because the mean of its divisors is an integer number (2542384).

Almost surely, 2^18481113 is an apocalyptic number.

It is an amenable number.

18481113 is a deficient number, since it is larger than the sum of its proper divisors (12027495).

18481113 is a wasteful number, since it uses less digits than its factorization.

18481113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293364 (or 293361 counting only the distinct ones).

The product of its digits is 768, while the sum is 27.

The square root of 18481113 is about 4298.9665037076. The cubic root of 18481113 is about 264.3885892450.

Adding to 18481113 its reverse (31118481), we get a palindrome (49599594).

The spelling of 18481113 in words is "eighteen million, four hundred eighty-one thousand, one hundred thirteen".