18021014983 has 8 divisors (see below), whose sum is σ = 18532419120. Its totient is φ = 17510892480.

The previous prime is 18021014981. The next prime is 18021014989. The reversal of 18021014983 is 38941012081.

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

It is a cyclic number.

It is not a de Polignac number, because 18021014983 - 2¹ = 18021014981 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18021014981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 291853 + ... + 348166.

It is an arithmetic number, because the mean of its divisors is an integer number (2316552390).

Almost surely, 2^18021014983 is an apocalyptic number.

18021014983 is a deficient number, since it is larger than the sum of its proper divisors (511404137).

18021014983 is an equidigital number, since it uses as much as digits as its factorization.

18021014983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640817.

The product of its (nonzero) digits is 13824, while the sum is 37.

The spelling of 18021014983 in words is "eighteen billion, twenty-one million, fourteen thousand, nine hundred eighty-three".