18821014 has 8 divisors (see below), whose sum is σ = 28888200. Its totient is φ = 9191616.

The previous prime is 18820993. The next prime is 18821021. The reversal of 18821014 is 41012881.

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

It is a self number, because there is not a number n which added to its sum of digits gives 18821014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109339 + ... + 109510.

It is an arithmetic number, because the mean of its divisors is an integer number (3611025).

Almost surely, 2^18821014 is an apocalyptic number.

18821014 is a deficient number, since it is larger than the sum of its proper divisors (10067186).

18821014 is a wasteful number, since it uses less digits than its factorization.

18821014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218894.

The product of its (nonzero) digits is 512, while the sum is 25.

The square root of 18821014 is about 4338.3192598056. The cubic root of 18821014 is about 265.9996136953. Note that the first 3 decimals are identical.

Adding to 18821014 its reverse (41012881), we get a palindrome (59833895).

The spelling of 18821014 in words is "eighteen million, eight hundred twenty-one thousand, fourteen".