18214211 has 8 divisors (see below), whose sum is σ = 18511584. Its totient is φ = 17919360.

The previous prime is 18214201. The next prime is 18214219. The reversal of 18214211 is 11241281.

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

It is a cyclic number.

It is not a de Polignac number, because 18214211 - 2¹⁴ = 18197827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18214219) 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 7 ways as a sum of consecutive naturals, for example, 18155 + ... + 19131.

It is an arithmetic number, because the mean of its divisors is an integer number (2313948).

Almost surely, 2^18214211 is an apocalyptic number.

18214211 is a deficient number, since it is larger than the sum of its proper divisors (297373).

18214211 is a wasteful number, since it uses less digits than its factorization.

18214211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1261.

The product of its digits is 128, while the sum is 20.

The square root of 18214211 is about 4267.8110314305. The cubic root of 18214211 is about 263.1096565961.

Adding to 18214211 its reverse (11241281), we get a palindrome (29455492).

The spelling of 18214211 in words is "eighteen million, two hundred fourteen thousand, two hundred eleven".