18286859365 has 8 divisors (see below), whose sum is σ = 21945032568. Its totient is φ = 14628953280.

The previous prime is 18286859363. The next prime is 18286859369. The reversal of 18286859365 is 56395868281.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 574177444 + 17712681921 = 23962^2 + 133089^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18286859365 - 2¹ = 18286859363 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 (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 in 7 ways as a sum of consecutive naturals, for example, 144759 + ... + 239851.

It is an arithmetic number, because the mean of its divisors is an integer number (2743129071).

Almost surely, 2^18286859365 is an apocalyptic number.

It is an amenable number.

18286859365 is a deficient number, since it is larger than the sum of its proper divisors (3658173203).

18286859365 is an equidigital number, since it uses as much as digits as its factorization.

18286859365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133559.

The product of its digits is 24883200, while the sum is 61.

The spelling of 18286859365 in words is "eighteen billion, two hundred eighty-six million, eight hundred fifty-nine thousand, three hundred sixty-five".