6518381834 has 16 divisors (see below), whose sum is σ = 10141267176. Its totient is φ = 3139704000.

The previous prime is 6518381809. The next prime is 6518381867. The reversal of 6518381834 is 4381838156.

It can be written as a sum of positive squares in 4 ways, for example, as 6506842225 + 11539609 = 80665^2 + 3397^2 .

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 7 ways as a sum of consecutive naturals, for example, 428597 + ... + 443544.

Almost surely, 2^6518381834 is an apocalyptic number.

6518381834 is a deficient number, since it is larger than the sum of its proper divisors (3622885342).

6518381834 is a wasteful number, since it uses less digits than its factorization.

6518381834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872281.

The product of its digits is 552960, while the sum is 47.

The square root of 6518381834 is about 80736.4962950461. The cubic root of 6518381834 is about 1868.0131636844.

The spelling of 6518381834 in words is "six billion, five hundred eighteen million, three hundred eighty-one thousand, eight hundred thirty-four".