18844282 has 8 divisors (see below), whose sum is σ = 28308852. Its totient is φ = 9408000.

The previous prime is 18844207. The next prime is 18844283. The reversal of 18844282 is 28244881.

It is a Cunningham number, because it is equal to 4341²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 18844281 + 1 = 4341^2 + 1^2 .

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

It is not an unprimeable number, because it can be changed into a prime (18844283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5319 + ... + 8122.

Almost surely, 2^18844282 is an apocalyptic number.

18844282 is a deficient number, since it is larger than the sum of its proper divisors (9464570).

18844282 is a wasteful number, since it uses less digits than its factorization.

18844282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14144.

The product of its digits is 32768, while the sum is 37.

The square root of 18844282 is about 4341.0001151808. Note that the first 3 decimals coincide. The cubic root of 18844282 is about 266.1091850182.

The spelling of 18844282 in words is "eighteen million, eight hundred forty-four thousand, two hundred eighty-two".