18214441 has 8 divisors (see below), whose sum is σ = 21023424. Its totient is φ = 15457200.

The previous prime is 18214439. The next prime is 18214451. The reversal of 18214441 is 14441281.

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 18214441 - 2¹ = 18214439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18214451) 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, 12175 + ... + 13588.

It is an arithmetic number, because the mean of its divisors is an integer number (2627928).

Almost surely, 2^18214441 is an apocalyptic number.

It is an amenable number.

18214441 is a deficient number, since it is larger than the sum of its proper divisors (2808983).

18214441 is a wasteful number, since it uses less digits than its factorization.

18214441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25871.

The product of its digits is 1024, while the sum is 25.

The square root of 18214441 is about 4267.8379772433. The cubic root of 18214441 is about 263.1107640641.

It can be divided in two parts, 182 and 14441, that multiplied together give a palindrome (2628262).

The spelling of 18214441 in words is "eighteen million, two hundred fourteen thousand, four hundred forty-one".