18359944896859 has 4 divisors (see below), whose sum is σ = 18359956474704. Its totient is φ = 18359933319016.

The previous prime is 18359944896841. The next prime is 18359944896869. The reversal of 18359944896859 is 95869844995381.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 18359944896859 - 2⁹ = 18359944896347 is a prime.

It is a super-3 number, since 3×18359944896859³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18359944896859.

It is not an unprimeable number, because it can be changed into a prime (18359944896869) 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 in 3 ways as a sum of consecutive naturals, for example, 2944312 + ... + 6737125.

It is an arithmetic number, because the mean of its divisors is an integer number (4589989118676).

Almost surely, 2^{18359944896859} is an apocalyptic number.

18359944896859 is a deficient number, since it is larger than the sum of its proper divisors (11577845).

18359944896859 is an equidigital number, since it uses as much as digits as its factorization.

18359944896859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11577844.

The product of its digits is 24186470400, while the sum is 88.

The spelling of 18359944896859 in words is "eighteen trillion, three hundred fifty-nine billion, nine hundred forty-four million, eight hundred ninety-six thousand, eight hundred fifty-nine".