18000363996 has 72 divisors (see below), whose sum is σ = 48190222080. Its totient is φ = 5872444272.

The previous prime is 18000363959. The next prime is 18000364013. The reversal of 18000363996 is 69936300081.

18000363996 is a `hidden beast` number, since 1 + 8 + 0 + 0 + 0 + 3 + 639 + 9 + 6 = 666.

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, 151326 + ... + 242693.

It is an arithmetic number, because the mean of its divisors is an integer number (669308640).

Almost surely, 2^18000363996 is an apocalyptic number.

It is an amenable number.

18000363996 is an abundant number, since it is smaller than the sum of its proper divisors (30189858084).

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

18000363996 is a wasteful number, since it uses less digits than its factorization.

18000363996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394085 (or 394071 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The spelling of 18000363996 in words is "eighteen billion, three hundred sixty-three thousand, nine hundred ninety-six".