1983636219816 has 24 divisors (see below), whose sum is σ = 5372348095530. Its totient is φ = 661212073248.

The previous prime is 1983636219793. The next prime is 1983636219821. The reversal of 1983636219816 is 6189126363891.

1983636219816 is a `hidden beast` number, since 1 + 9 + 83 + 6 + 362 + 198 + 1 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1074767624100 + 908868595716 = 1036710^2 + 953346^2 .

It is a tau number, because it is divible by the number of its divisors (24).

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

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13775251455 + ... + 13775251598.

Almost surely, 2^{1983636219816} is an apocalyptic number.

It is an amenable number.

1983636219816 is an abundant number, since it is smaller than the sum of its proper divisors (3388711875714).

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

1983636219816 is a wasteful number, since it uses less digits than its factorization.

1983636219816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27550503065 (or 27550503058 counting only the distinct ones).

The product of its digits is 20155392, while the sum is 63.

The spelling of 1983636219816 in words is "one trillion, nine hundred eighty-three billion, six hundred thirty-six million, two hundred nineteen thousand, eight hundred sixteen".