3981700449791 has 8 divisors (see below), whose sum is σ = 3984756202944. Its totient is φ = 3978645086080.

The previous prime is 3981700449751. The next prime is 3981700449799. The reversal of 3981700449791 is 1979440071893.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3981700449791 - 2¹⁰ = 3981700448767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3981700449799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22324730 + ... + 22502376.

It is an arithmetic number, because the mean of its divisors is an integer number (498094525368).

Almost surely, 2^{3981700449791} is an apocalyptic number.

3981700449791 is a deficient number, since it is larger than the sum of its proper divisors (3055753153).

3981700449791 is a wasteful number, since it uses less digits than its factorization.

3981700449791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194721.

The product of its (nonzero) digits is 13716864, while the sum is 62.

The spelling of 3981700449791 in words is "three trillion, nine hundred eighty-one billion, seven hundred million, four hundred forty-nine thousand, seven hundred ninety-one".