18113630 has 16 divisors (see below), whose sum is σ = 32653584. Its totient is φ = 7234560.

The previous prime is 18113611. The next prime is 18113647. The reversal of 18113630 is 3631181.

It is a junction number, because it is equal to n+sod(n) for n = 18113596 and 18113605.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10745 + ... + 12315.

It is an arithmetic number, because the mean of its divisors is an integer number (2040849).

Almost surely, 2^18113630 is an apocalyptic number.

18113630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18113630 is a deficient number, since it is larger than the sum of its proper divisors (14539954).

18113630 is a wasteful number, since it uses less digits than its factorization.

18113630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2731.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 18113630 is about 4256.0110432188. The cubic root of 18113630 is about 262.6244549682.

The spelling of 18113630 in words is "eighteen million, one hundred thirteen thousand, six hundred thirty".