1800381636216 has 96 divisors (see below), whose sum is σ = 4882338115200. Its totient is φ = 599351818560.

The previous prime is 1800381636197. The next prime is 1800381636259. The reversal of 1800381636216 is 6126361830081.

1800381636216 is a `hidden beast` number, since 1 + 8 + 0 + 0 + 3 + 8 + 1 + 636 + 2 + 1 + 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 (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 238173445 + ... + 238181003.

It is an arithmetic number, because the mean of its divisors is an integer number (50857688700).

Almost surely, 2^{1800381636216} is an apocalyptic number.

It is an amenable number.

1800381636216 is an abundant number, since it is smaller than the sum of its proper divisors (3081956478984).

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

1800381636216 is a wasteful number, since it uses less digits than its factorization.

1800381636216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11409 (or 11402 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 1800381636216 in words is "one trillion, eight hundred billion, three hundred eighty-one million, six hundred thirty-six thousand, two hundred sixteen".