18336853802 has 4 divisors (see below), whose sum is σ = 27505280706. Its totient is φ = 9168426900.

The previous prime is 18336853793. The next prime is 18336853807. The reversal of 18336853802 is 20835863381.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20835863381 = 119809 ⋅173909.

It can be written as a sum of positive squares in only one way, i.e., 10731095281 + 7605758521 = 103591^2 + 87211^2 .

It is not an unprimeable number, because it can be changed into a prime (18336853807) 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, 4584213449 + ... + 4584213452.

Almost surely, 2^18336853802 is an apocalyptic number.

18336853802 is a deficient number, since it is larger than the sum of its proper divisors (9168426904).

18336853802 is an equidigital number, since it uses as much as digits as its factorization.

18336853802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9168426903.

The product of its (nonzero) digits is 829440, while the sum is 47.

The spelling of 18336853802 in words is "eighteen billion, three hundred thirty-six million, eight hundred fifty-three thousand, eight hundred two".