3981683619616 has 24 divisors (see below), whose sum is σ = 7839316065420. Its totient is φ = 1990746206208.

The previous prime is 3981683619593. The next prime is 3981683619701. The reversal of 3981683619616 is 6169163861893.

It can be written as a sum of positive squares in 2 ways, for example, as 3294210480016 + 687473139600 = 1814996^2 + 829140^2 .

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 3 ways as a sum of consecutive naturals, for example, 2308461 + ... + 3645868.

Almost surely, 2^{3981683619616} is an apocalyptic number.

It is an amenable number.

3981683619616 is a deficient number, since it is larger than the sum of its proper divisors (3857632445804).

3981683619616 is a wasteful number, since it uses less digits than its factorization.

3981683619616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5975236 (or 5975228 counting only the distinct ones).

The product of its digits is 60466176, while the sum is 67.

The spelling of 3981683619616 in words is "three trillion, nine hundred eighty-one billion, six hundred eighty-three million, six hundred nineteen thousand, six hundred sixteen".