18682787983 has 6 divisors (see below), whose sum is σ = 18764781144. Its totient is φ = 18601151544.

The previous prime is 18682787971. The next prime is 18682787987. The reversal of 18682787983 is 38978728681.

It is not a de Polignac number, because 18682787983 - 2⁹ = 18682787471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18682787987) 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 5 ways as a sum of consecutive naturals, for example, 125691 + ... + 230572.

It is an arithmetic number, because the mean of its divisors is an integer number (3127463524).

Almost surely, 2^18682787983 is an apocalyptic number.

18682787983 is a deficient number, since it is larger than the sum of its proper divisors (81993161).

18682787983 is an frugal number, since it uses more digits than its factorization.

18682787983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356721 (or 356492 counting only the distinct ones).

The product of its digits is 65028096, while the sum is 67.

The spelling of 18682787983 in words is "eighteen billion, six hundred eighty-two million, seven hundred eighty-seven thousand, nine hundred eighty-three".