4778842218 has 16 divisors (see below), whose sum is σ = 9761040000. Its totient is φ = 1559054816.

The previous prime is 4778842217. The next prime is 4778842249. The reversal of 4778842218 is 8122488774.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (4778842217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8472843 + ... + 8473406.

It is an arithmetic number, because the mean of its divisors is an integer number (610065000).

Almost surely, 2^4778842218 is an apocalyptic number.

4778842218 is an abundant number, since it is smaller than the sum of its proper divisors (4982197782).

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

4778842218 is a wasteful number, since it uses less digits than its factorization.

4778842218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16946301.

The product of its digits is 1605632, while the sum is 51.

The square root of 4778842218 is about 69129.1705288006. The cubic root of 4778842218 is about 1684.3831849660.

The spelling of 4778842218 in words is "four billion, seven hundred seventy-eight million, eight hundred forty-two thousand, two hundred eighteen".