18706113 has 16 divisors (see below), whose sum is σ = 28608000. Its totient is φ = 12067920.

The previous prime is 18706111. The next prime is 18706123. The reversal of 18706113 is 31160781.

It is not a de Polignac number, because 18706113 - 2¹ = 18706111 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (18706111) 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 15 ways as a sum of consecutive naturals, for example, 10338 + ... + 12011.

It is an arithmetic number, because the mean of its divisors is an integer number (1788000).

Almost surely, 2^18706113 is an apocalyptic number.

It is an amenable number.

18706113 is a deficient number, since it is larger than the sum of its proper divisors (9901887).

18706113 is a wasteful number, since it uses less digits than its factorization.

18706113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22389 (or 22383 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 18706113 is about 4325.0564158170. The cubic root of 18706113 is about 265.4572052701.

Adding to 18706113 its reverse (31160781), we get a palindrome (49866894).

The spelling of 18706113 in words is "eighteen million, seven hundred six thousand, one hundred thirteen".