18214911 has 24 divisors (see below), whose sum is σ = 30912336. Its totient is φ = 10189440.

The previous prime is 18214909. The next prime is 18214921. The reversal of 18214911 is 11941281.

It is not a de Polignac number, because 18214911 - 2¹ = 18214909 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18214921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5790 + ... + 8363.

It is an arithmetic number, because the mean of its divisors is an integer number (1288014).

Almost surely, 2^18214911 is an apocalyptic number.

18214911 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

18214911 is a deficient number, since it is larger than the sum of its proper divisors (12697425).

18214911 is a wasteful number, since it uses less digits than its factorization.

18214911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14183 (or 14180 counting only the distinct ones).

The product of its digits is 576, while the sum is 27.

The square root of 18214911 is about 4267.8930398969. The cubic root of 18214911 is about 263.1130271219.

The spelling of 18214911 in words is "eighteen million, two hundred fourteen thousand, nine hundred eleven".