6815420218 has 16 divisors (see below), whose sum is σ = 10355748480. Its totient is φ = 3363530976.

The previous prime is 6815420197. The next prime is 6815420291. The reversal of 6815420218 is 8120245186.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 851905 + ... + 859867.

It is an arithmetic number, because the mean of its divisors is an integer number (647234280).

Almost surely, 2^6815420218 is an apocalyptic number.

6815420218 is a deficient number, since it is larger than the sum of its proper divisors (3540328262).

6815420218 is a wasteful number, since it uses less digits than its factorization.

6815420218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13461.

The product of its (nonzero) digits is 30720, while the sum is 37.

The square root of 6815420218 is about 82555.5583713174. The cubic root of 6815420218 is about 1895.9674601776.

The spelling of 6815420218 in words is "six billion, eight hundred fifteen million, four hundred twenty thousand, two hundred eighteen".