4878431866 has 48 divisors (see below), whose sum is σ = 9295018272. Its totient is φ = 1898887200.

The previous prime is 4878431861. The next prime is 4878431891. The reversal of 4878431866 is 6681348784.

It is not an unprimeable number, because it can be changed into a prime (4878431861) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2022201 + ... + 2024611.

It is an arithmetic number, because the mean of its divisors is an integer number (193646214).

Almost surely, 2^4878431866 is an apocalyptic number.

4878431866 is a deficient number, since it is larger than the sum of its proper divisors (4416586406).

4878431866 is a wasteful number, since it uses less digits than its factorization.

4878431866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4315 (or 4308 counting only the distinct ones).

The product of its digits is 6193152, while the sum is 55.

The square root of 4878431866 is about 69845.7719980243. The cubic root of 4878431866 is about 1696.0035147833.

The spelling of 4878431866 in words is "four billion, eight hundred seventy-eight million, four hundred thirty-one thousand, eight hundred sixty-six".