6471920418 has 32 divisors (see below), whose sum is σ = 13231221696. Its totient is φ = 2109676608.

The previous prime is 6471920407. The next prime is 6471920431. The reversal of 6471920418 is 8140291746.

It is a self number, because there is not a number n which added to its sum of digits gives 6471920418.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64480 + ... + 130772.

It is an arithmetic number, because the mean of its divisors is an integer number (413475678).

Almost surely, 2^6471920418 is an apocalyptic number.

6471920418 is an abundant number, since it is smaller than the sum of its proper divisors (6759301278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6471920418 is a wasteful number, since it uses less digits than its factorization.

6471920418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66658.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 6471920418 is about 80448.2468298719. The cubic root of 6471920418 is about 1863.5643313141.

The spelling of 6471920418 in words is "six billion, four hundred seventy-one million, nine hundred twenty thousand, four hundred eighteen".