6828921218 has 64 divisors (see below), whose sum is σ = 12401026560. Its totient is φ = 2758758912.

The previous prime is 6828921179. The next prime is 6828921221. The reversal of 6828921218 is 8121298286.

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, 3051596 + ... + 3053832.

It is an arithmetic number, because the mean of its divisors is an integer number (193766040).

Almost surely, 2^6828921218 is an apocalyptic number.

6828921218 is a deficient number, since it is larger than the sum of its proper divisors (5572105342).

6828921218 is a wasteful number, since it uses less digits than its factorization.

6828921218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2451.

The product of its digits is 221184, while the sum is 47.

The square root of 6828921218 is about 82637.2870924500. The cubic root of 6828921218 is about 1897.2185727048.

The spelling of 6828921218 in words is "six billion, eight hundred twenty-eight million, nine hundred twenty-one thousand, two hundred eighteen".