18369834336 has 144 divisors (see below), whose sum is σ = 60060559104. Its totient is φ = 5217000192.

The previous prime is 18369834323. The next prime is 18369834389. The reversal of 18369834336 is 63343896381.

18369834336 is a `hidden beast` number, since 183 + 6 + 98 + 343 + 36 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 309391 + ... + 363953.

It is an arithmetic number, because the mean of its divisors is an integer number (417087216).

Almost surely, 2^18369834336 is an apocalyptic number.

18369834336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18369834336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30030279552).

18369834336 is an abundant number, since it is smaller than the sum of its proper divisors (41690724768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18369834336 is a wasteful number, since it uses less digits than its factorization.

18369834336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54753 (or 54742 counting only the distinct ones).

The product of its digits is 6718464, while the sum is 54.

The spelling of 18369834336 in words is "eighteen billion, three hundred sixty-nine million, eight hundred thirty-four thousand, three hundred thirty-six".