3847716864 has 128 divisors (see below), whose sum is σ = 11403090000. Its totient is φ = 1282277376.

The previous prime is 3847716857. The next prime is 3847716881. The reversal of 3847716864 is 4686177483.

3847716864 is a `hidden beast` number, since 3 + 8 + 477 + 168 + 6 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 3847716864.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 882562 + ... + 886910.

Almost surely, 2^3847716864 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 3847716864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5701545000).

3847716864 is an abundant number, since it is smaller than the sum of its proper divisors (7555373136).

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

3847716864 is an frugal number, since it uses more digits than its factorization.

3847716864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4388 (or 4354 counting only the distinct ones).

The product of its digits is 5419008, while the sum is 54.

The square root of 3847716864 is about 62029.9674673460. The cubic root of 3847716864 is about 1566.9953303120.

The spelling of 3847716864 in words is "three billion, eight hundred forty-seven million, seven hundred sixteen thousand, eight hundred sixty-four".