18036942336 has 720 divisors, whose sum is σ = 66368180736. Its totient is φ = 4682022912.

The previous prime is 18036942293. The next prime is 18036942347. The reversal of 18036942336 is 63324963081.

It is a junction number, because it is equal to n+sod(n) for n = 18036942291 and 18036942300.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 142023105 + ... + 142023231.

Almost surely, 2^18036942336 is an apocalyptic number.

18036942336 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 18036942336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33184090368).

18036942336 is an abundant number, since it is smaller than the sum of its proper divisors (48331238400).

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

18036942336 is a wasteful number, since it uses less digits than its factorization.

18036942336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219 (or 193 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

The spelling of 18036942336 in words is "eighteen billion, thirty-six million, nine hundred forty-two thousand, three hundred thirty-six".