8245563813 has 24 divisors (see below), whose sum is σ = 11985442560. Its totient is φ = 5462442720.

The previous prime is 8245563793. The next prime is 8245563829. The reversal of 8245563813 is 3183655428.

8245563813 is a `hidden beast` number, since 8 + 2 + 4 + 5 + 5 + 638 + 1 + 3 = 666.

It is not a de Polignac number, because 8245563813 - 2⁶ = 8245563749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8245563883) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1078143 + ... + 1085763.

It is an arithmetic number, because the mean of its divisors is an integer number (499393440).

Almost surely, 2^8245563813 is an apocalyptic number.

It is an amenable number.

8245563813 is a deficient number, since it is larger than the sum of its proper divisors (3739878747).

8245563813 is a wasteful number, since it uses less digits than its factorization.

8245563813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8369 (or 8366 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The square root of 8245563813 is about 90805.0869334973. The cubic root of 8245563813 is about 2020.2577696896.

The spelling of 8245563813 in words is "eight billion, two hundred forty-five million, five hundred sixty-three thousand, eight hundred thirteen".