8113305820 has 24 divisors (see below), whose sum is σ = 17040973824. Its totient is φ = 3244744896.

The previous prime is 8113305803. The next prime is 8113305853. The reversal of 8113305820 is 285033118.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89842 + ... + 155878.

It is an arithmetic number, because the mean of its divisors is an integer number (710040576).

Almost surely, 2^8113305820 is an apocalyptic number.

It is an amenable number.

8113305820 is an abundant number, since it is smaller than the sum of its proper divisors (8927668004).

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

8113305820 is a wasteful number, since it uses less digits than its factorization.

8113305820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72189 (or 72187 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 8113305820 is about 90073.8908896468. The cubic root of 8113305820 is about 2009.3979220280.

Adding to 8113305820 its reverse (285033118), we get a palindrome (8398338938).

The spelling of 8113305820 in words is "eight billion, one hundred thirteen million, three hundred five thousand, eight hundred twenty".