6479885818 has 64 divisors (see below), whose sum is σ = 12919357440. Its totient is φ = 2368472832.

The previous prime is 6479885803. The next prime is 6479885849. The reversal of 6479885818 is 8185889746.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 6479885818.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72855 + ... + 135157.

It is an arithmetic number, because the mean of its divisors is an integer number (201864960).

Almost surely, 2^6479885818 is an apocalyptic number.

6479885818 is a deficient number, since it is larger than the sum of its proper divisors (6439471622).

6479885818 is a wasteful number, since it uses less digits than its factorization.

6479885818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62371.

The product of its digits is 30965760, while the sum is 64.

The square root of 6479885818 is about 80497.7379682187. The cubic root of 6479885818 is about 1864.3285531987.

The spelling of 6479885818 in words is "six billion, four hundred seventy-nine million, eight hundred eighty-five thousand, eight hundred eighteen".