18286859369 has 2 divisors, whose sum is σ = 18286859370. Its totient is φ = 18286859368.

The previous prime is 18286859363. The next prime is 18286859419. The reversal of 18286859369 is 96395868281.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12012160000 + 6274699369 = 109600^2 + 79213^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18286859369 is a prime.

It is a super-2 number, since 2×18286859369² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (18286859363) 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 as a sum of consecutive naturals, namely, 9143429684 + 9143429685.

It is an arithmetic number, because the mean of its divisors is an integer number (9143429685).

Almost surely, 2^18286859369 is an apocalyptic number.

It is an amenable number.

18286859369 is a deficient number, since it is larger than the sum of its proper divisors (1).

18286859369 is an equidigital number, since it uses as much as digits as its factorization.

18286859369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 44789760, while the sum is 65.

The spelling of 18286859369 in words is "eighteen billion, two hundred eighty-six million, eight hundred fifty-nine thousand, three hundred sixty-nine".