4778486784 has 220 divisors, whose sum is σ = 14552106624. Its totient is φ = 1561337856.

The previous prime is 4778486773. The next prime is 4778486857. The reversal of 4778486784 is 4876848774.

4778486784 is a `hidden beast` number, since 4 + 7 + 78 + 486 + 7 + 84 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4395489 + ... + 4396575.

Almost surely, 2^4778486784 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 4778486784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7276053312).

4778486784 is an abundant number, since it is smaller than the sum of its proper divisors (9773619840).

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

4778486784 is a wasteful number, since it uses less digits than its factorization.

4778486784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1172 (or 1145 counting only the distinct ones).

The product of its digits is 67436544, while the sum is 63.

The square root of 4778486784 is about 69126.5996849259. The cubic root of 4778486784 is about 1684.3414243701.

The spelling of 4778486784 in words is "four billion, seven hundred seventy-eight million, four hundred eighty-six thousand, seven hundred eighty-four".