6479239818 has 32 divisors (see below), whose sum is σ = 14442891840. Its totient is φ = 1925717760.

The previous prime is 6479239813. The next prime is 6479239831. The reversal of 6479239818 is 8189329746.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6479239813) by changing a digit.

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, 1669693 + ... + 1673568.

It is an arithmetic number, because the mean of its divisors is an integer number (451340370).

Almost surely, 2^6479239818 is an apocalyptic number.

6479239818 is an abundant number, since it is smaller than the sum of its proper divisors (7963652022).

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

6479239818 is a wasteful number, since it uses less digits than its factorization.

6479239818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3343302.

The product of its digits is 5225472, while the sum is 57.

The square root of 6479239818 is about 80493.7253330966. The cubic root of 6479239818 is about 1864.2665975664.

The spelling of 6479239818 in words is "six billion, four hundred seventy-nine million, two hundred thirty-nine thousand, eight hundred eighteen".