18982944 has 96 divisors (see below), whose sum is σ = 56125440. Its totient is φ = 6241536.

The previous prime is 18982937. The next prime is 18982949. The reversal of 18982944 is 44928981.

It is a tau number, because it is divible by the number of its divisors (96).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 18982944.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18982949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109642 + ... + 109814.

It is an arithmetic number, because the mean of its divisors is an integer number (584640).

Almost surely, 2^18982944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18982944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28062720).

18982944 is an abundant number, since it is smaller than the sum of its proper divisors (37142496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18982944 is a wasteful number, since it uses less digits than its factorization.

18982944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319 (or 305 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 18982944 is about 4356.9420468948. The cubic root of 18982944 is about 266.7602949005.

The spelling of 18982944 in words is "eighteen million, nine hundred eighty-two thousand, nine hundred forty-four".