4778680384 has 21 divisors (see below), whose sum is σ = 9483791421. Its totient is φ = 2389063680.

The previous prime is 4778680373. The next prime is 4778680409. The reversal of 4778680384 is 4830868774.

It is a happy number.

The square root of 4778680384 is 69128.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 132894784 + 4645785600 = 11528^2 + 68160^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 548704 + ... + 557344.

Almost surely, 2^4778680384 is an apocalyptic number.

4778680384 is the 69128-th square number.

It is an amenable number.

4778680384 is a deficient number, since it is larger than the sum of its proper divisors (4705111037).

4778680384 is an frugal number, since it uses more digits than its factorization.

4778680384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17294 (or 8643 counting only the distinct ones).

The product of its (nonzero) digits is 7225344, while the sum is 55.

The cubic root of 4778680384 is about 1684.3641710478.

The spelling of 4778680384 in words is "four billion, seven hundred seventy-eight million, six hundred eighty thousand, three hundred eighty-four".