3783978672 has 80 divisors (see below), whose sum is σ = 10191633408. Its totient is φ = 1208712960.

The previous prime is 3783978613. The next prime is 3783978673. The reversal of 3783978672 is 2768793873.

3783978672 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (3783978673) 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, 92097 + ... + 126687.

Almost surely, 2^3783978672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3783978672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5095816704).

3783978672 is an abundant number, since it is smaller than the sum of its proper divisors (6407654736).

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

3783978672 is a wasteful number, since it uses less digits than its factorization.

3783978672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34698 (or 34692 counting only the distinct ones).

The product of its digits is 21337344, while the sum is 60.

The square root of 3783978672 is about 61514.0526384013. The cubic root of 3783978672 is about 1558.2945794119.

The spelling of 3783978672 in words is "three billion, seven hundred eighty-three million, nine hundred seventy-eight thousand, six hundred seventy-two".