18289795873 has 2 divisors, whose sum is σ = 18289795874. Its totient is φ = 18289795872.

The previous prime is 18289795861. The next prime is 18289795957. The reversal of 18289795873 is 37859798281.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13104067729 + 5185728144 = 114473^2 + 72012^2 .

It is a cyclic number.

It is not a de Polignac number, because 18289795873 - 2⁹ = 18289795361 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18289795799 and 18289795808.

It is not a weakly prime, because it can be changed into another prime (18289795813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9144897936 + 9144897937.

It is an arithmetic number, because the mean of its divisors is an integer number (9144897937).

Almost surely, 2^18289795873 is an apocalyptic number.

It is an amenable number.

18289795873 is a deficient number, since it is larger than the sum of its proper divisors (1).

18289795873 is an equidigital number, since it uses as much as digits as its factorization.

18289795873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60963840, while the sum is 67.

The spelling of 18289795873 in words is "eighteen billion, two hundred eighty-nine million, seven hundred ninety-five thousand, eight hundred seventy-three".