18282344443 has 32 divisors (see below), whose sum is σ = 21331537920. Its totient is φ = 15501726240.

The previous prime is 18282344441. The next prime is 18282344447. The reversal of 18282344443 is 34444328281.

It is a happy number.

It is not a de Polignac number, because 18282344443 - 2¹ = 18282344441 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a self number, because there is not a number n which added to its sum of digits gives 18282344443.

It is not an unprimeable number, because it can be changed into a prime (18282344441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9126480 + ... + 9128482.

It is an arithmetic number, because the mean of its divisors is an integer number (666610560).

Almost surely, 2^18282344443 is an apocalyptic number.

18282344443 is a deficient number, since it is larger than the sum of its proper divisors (3049193477).

18282344443 is a wasteful number, since it uses less digits than its factorization.

18282344443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2919.

The product of its digits is 589824, while the sum is 43.

The spelling of 18282344443 in words is "eighteen billion, two hundred eighty-two million, three hundred forty-four thousand, four hundred forty-three".