18111214 has 8 divisors (see below), whose sum is σ = 29636568. Its totient is φ = 8232360.

The previous prime is 18111187. The next prime is 18111229. The reversal of 18111214 is 41211181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 18111191 and 18111200.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 411597 + ... + 411640.

It is an arithmetic number, because the mean of its divisors is an integer number (3704571).

Almost surely, 2^18111214 is an apocalyptic number.

18111214 is a deficient number, since it is larger than the sum of its proper divisors (11525354).

18111214 is a wasteful number, since it uses less digits than its factorization.

18111214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823250.

The product of its digits is 64, while the sum is 19.

The square root of 18111214 is about 4255.7271999037. The cubic root of 18111214 is about 262.6127781463.

Adding to 18111214 its reverse (41211181), we get a palindrome (59322395).

It can be divided in two parts, 1811 and 1214, that added together give a square (3025 = 55²).

The spelling of 18111214 in words is "eighteen million, one hundred eleven thousand, two hundred fourteen".