4789721856 has 72 divisors (see below), whose sum is σ = 13418614720. Its totient is φ = 1512539136.

The previous prime is 4789721843. The next prime is 4789721857. The reversal of 4789721856 is 6581279874.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a junction number, because it is equal to n+sod(n) for n = 4789721796 and 4789721805.

It is not an unprimeable number, because it can be changed into a prime (4789721857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149530 + ... + 178713.

Almost surely, 2^4789721856 is an apocalyptic number.

It is an amenable number.

4789721856 is an abundant number, since it is smaller than the sum of its proper divisors (8628892864).

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

4789721856 is a wasteful number, since it uses less digits than its factorization.

4789721856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328281 (or 328267 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 57.

The square root of 4789721856 is about 69207.8164371626. The cubic root of 4789721856 is about 1685.6604532022.

The spelling of 4789721856 in words is "four billion, seven hundred eighty-nine million, seven hundred twenty-one thousand, eight hundred fifty-six".