4784684778 has 12 divisors (see below), whose sum is σ = 10366817058. Its totient is φ = 1594894920.

The previous prime is 4784684717. The next prime is 4784684783. The reversal of 4784684778 is 8774864874.

It can be written as a sum of positive squares in only one way, i.e., 3546559809 + 1238124969 = 59553^2 + 35187^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 132907893 + ... + 132907928.

Almost surely, 2^4784684778 is an apocalyptic number.

4784684778 is an abundant number, since it is smaller than the sum of its proper divisors (5582132280).

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

4784684778 is a wasteful number, since it uses less digits than its factorization.

4784684778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265815829 (or 265815826 counting only the distinct ones).

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

The square root of 4784684778 is about 69171.4159028135. The cubic root of 4784684778 is about 1685.0693415391.

The spelling of 4784684778 in words is "four billion, seven hundred eighty-four million, six hundred eighty-four thousand, seven hundred seventy-eight".