3981456680 has 64 divisors (see below), whose sum is σ = 9052560000. Its totient is φ = 1575915264.

The previous prime is 3981456679. The next prime is 3981456683. The reversal of 3981456680 is 866541893.

It is not an unprimeable number, because it can be changed into a prime (3981456683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1566851 + ... + 1569389.

It is an arithmetic number, because the mean of its divisors is an integer number (141446250).

Almost surely, 2^3981456680 is an apocalyptic number.

It is an amenable number.

3981456680 is an abundant number, since it is smaller than the sum of its proper divisors (5071103320).

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

3981456680 is a wasteful number, since it uses less digits than its factorization.

3981456680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2946 (or 2942 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 50.

The square root of 3981456680 is about 63098.7850913153. The cubic root of 3981456680 is about 1584.9442778461.

The spelling of 3981456680 in words is "three billion, nine hundred eighty-one million, four hundred fifty-six thousand, six hundred eighty".