18944427283 has 8 divisors (see below), whose sum is σ = 19194687680. Its totient is φ = 18694428480.

The previous prime is 18944427263. The next prime is 18944427289. The reversal of 18944427283 is 38272444981.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18944427283 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18944427283.

It is not an unprimeable number, because it can be changed into a prime (18944427289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82591 + ... + 211447.

It is an arithmetic number, because the mean of its divisors is an integer number (2399335960).

Almost surely, 2^18944427283 is an apocalyptic number.

18944427283 is a deficient number, since it is larger than the sum of its proper divisors (250260397).

18944427283 is a wasteful number, since it uses less digits than its factorization.

18944427283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130797.

The product of its digits is 3096576, while the sum is 52.

The spelling of 18944427283 in words is "eighteen billion, nine hundred forty-four million, four hundred twenty-seven thousand, two hundred eighty-three".