19846386943684 has 12 divisors (see below), whose sum is σ = 39692773887424. Its totient is φ = 8505594404424.

The previous prime is 19846386943589. The next prime is 19846386943741. The reversal of 19846386943684 is 48634968364891.

19846386943684 is an admirable 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 3 ways as a sum of consecutive naturals, for example, 354399766824 + ... + 354399766879.

Almost surely, 2^{19846386943684} is an apocalyptic number.

19846386943684 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

19846386943684 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

19846386943684 is a wasteful number, since it uses less digits than its factorization.

19846386943684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708799533714 (or 708799533712 counting only the distinct ones).

The product of its digits is 5159780352, while the sum is 79.

The spelling of 19846386943684 in words is "nineteen trillion, eight hundred forty-six billion, three hundred eighty-six million, nine hundred forty-three thousand, six hundred eighty-four".