18814111 has 4 divisors (see below), whose sum is σ = 18846432. Its totient is φ = 18781792.

The previous prime is 18814079. The next prime is 18814141. The reversal of 18814111 is 11141881.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18814111 - 2⁵ = 18814079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18814141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15271 + ... + 16456.

It is an arithmetic number, because the mean of its divisors is an integer number (4711608).

Almost surely, 2^18814111 is an apocalyptic number.

18814111 is a deficient number, since it is larger than the sum of its proper divisors (32321).

18814111 is an equidigital number, since it uses as much as digits as its factorization.

18814111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32320.

The product of its digits is 256, while the sum is 25.

The square root of 18814111 is about 4337.5236022413. The cubic root of 18814111 is about 265.9670894139.

Adding to 18814111 its reverse (11141881), we get a palindrome (29955992).

The spelling of 18814111 in words is "eighteen million, eight hundred fourteen thousand, one hundred eleven".