18214839 has 12 divisors (see below), whose sum is σ = 26347776. Its totient is φ = 12125952.

The previous prime is 18214811. The next prime is 18214849. The reversal of 18214839 is 93841281.

It is not a de Polignac number, because 18214839 - 2¹² = 18210743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18214849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10122 + ... + 11784.

It is an arithmetic number, because the mean of its divisors is an integer number (2195648).

Almost surely, 2^18214839 is an apocalyptic number.

18214839 is a deficient number, since it is larger than the sum of its proper divisors (8132937).

18214839 is a wasteful number, since it uses less digits than its factorization.

18214839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2886 (or 2883 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 18214839 is about 4267.8846048130. The cubic root of 18214839 is about 263.1126804432.

The spelling of 18214839 in words is "eighteen million, two hundred fourteen thousand, eight hundred thirty-nine".