4854978866 has 4 divisors (see below), whose sum is σ = 7282468302. Its totient is φ = 2427489432.

The previous prime is 4854978853. The next prime is 4854978871. The reversal of 4854978866 is 6688794584.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3693600625 + 1161378241 = 60775^2 + 34079^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1213744715 + ... + 1213744718.

Almost surely, 2^4854978866 is an apocalyptic number.

4854978866 is a deficient number, since it is larger than the sum of its proper divisors (2427489436).

4854978866 is a wasteful number, since it uses less digits than its factorization.

4854978866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2427489435.

The product of its digits is 92897280, while the sum is 65.

The square root of 4854978866 is about 69677.6783912897. The cubic root of 4854978866 is about 1693.2813092479.

The spelling of 4854978866 in words is "four billion, eight hundred fifty-four million, nine hundred seventy-eight thousand, eight hundred sixty-six".