6813544858 has 16 divisors (see below), whose sum is σ = 10259181504. Its totient is φ = 3393835200.

The previous prime is 6813544831. The next prime is 6813544897. The reversal of 6813544858 is 8584453186.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 974491 + ... + 981457.

It is an arithmetic number, because the mean of its divisors is an integer number (641198844).

Almost surely, 2^6813544858 is an apocalyptic number.

6813544858 is a deficient number, since it is larger than the sum of its proper divisors (3445636646).

6813544858 is a wasteful number, since it uses less digits than its factorization.

6813544858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8757.

The product of its digits is 3686400, while the sum is 52.

The square root of 6813544858 is about 82544.1994206740. The cubic root of 6813544858 is about 1895.7935434027.

The spelling of 6813544858 in words is "six billion, eight hundred thirteen million, five hundred forty-four thousand, eight hundred fifty-eight".