18683000663 has 8 divisors (see below), whose sum is σ = 20264489280. Its totient is φ = 17155121920.

The previous prime is 18683000659. The next prime is 18683000737. The reversal of 18683000663 is 36600038681.

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 18683000663 - 2² = 18683000659 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

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 18683000663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18683000653) 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, 13401743 + ... + 13403136.

It is an arithmetic number, because the mean of its divisors is an integer number (2533061160).

Almost surely, 2^18683000663 is an apocalyptic number.

18683000663 is a deficient number, since it is larger than the sum of its proper divisors (1581488617).

18683000663 is a wasteful number, since it uses less digits than its factorization.

18683000663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26804937.

The product of its (nonzero) digits is 124416, while the sum is 41.

The spelling of 18683000663 in words is "eighteen billion, six hundred eighty-three million, six hundred sixty-three", and thus it is an aban number.