18683336866973 has 2 divisors, whose sum is σ = 18683336866974. Its totient is φ = 18683336866972.

The previous prime is 18683336866967. The next prime is 18683336867021. The reversal of 18683336866973 is 37966863338681.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17826271961689 + 857064905284 = 4222117^2 + 925778^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18683336866973 is a prime.

It is a super-3 number, since 3×18683336866973³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18683336866894 and 18683336866903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18683336866573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9341668433486 + 9341668433487.

It is an arithmetic number, because the mean of its divisors is an integer number (9341668433487).

Almost surely, 2^{18683336866973} is an apocalyptic number.

It is an amenable number.

18683336866973 is a deficient number, since it is larger than the sum of its proper divisors (1).

18683336866973 is an equidigital number, since it uses as much as digits as its factorization.

18683336866973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3386105856, while the sum is 77.

The spelling of 18683336866973 in words is "eighteen trillion, six hundred eighty-three billion, three hundred thirty-six million, eight hundred sixty-six thousand, nine hundred seventy-three".