6479738658 has 24 divisors (see below), whose sum is σ = 14100750300. Its totient is φ = 2150479584.

The previous prime is 6479738653. The next prime is 6479738659. The reversal of 6479738658 is 8568379746.

It can be written as a sum of positive squares in 2 ways, for example, as 6295946409 + 183792249 = 79347^2 + 13557^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6479738595 and 6479738604.

It is not an unprimeable number, because it can be changed into a prime (6479738653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 781873 + ... + 790116.

Almost surely, 2^6479738658 is an apocalyptic number.

6479738658 is an abundant number, since it is smaller than the sum of its proper divisors (7621011642).

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

6479738658 is a wasteful number, since it uses less digits than its factorization.

6479738658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1572226 (or 1572223 counting only the distinct ones).

The product of its digits is 60963840, while the sum is 63.

The square root of 6479738658 is about 80496.8239000770. The cubic root of 6479738658 is about 1864.3144399527.

The spelling of 6479738658 in words is "six billion, four hundred seventy-nine million, seven hundred thirty-eight thousand, six hundred fifty-eight".