8642865793 has 4 divisors (see below), whose sum is σ = 8644902228. Its totient is φ = 8640829360.

The previous prime is 8642865769. The next prime is 8642865821. The reversal of 8642865793 is 3975682468.

8642865793 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 893232769 + 7749633024 = 29887^2 + 88032^2 .

It is a cyclic number.

It is not a de Polignac number, because 8642865793 - 2²⁹ = 8105994881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8642869793) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1011838 + ... + 1020343.

It is an arithmetic number, because the mean of its divisors is an integer number (2161225557).

Almost surely, 2^8642865793 is an apocalyptic number.

It is an amenable number.

8642865793 is a deficient number, since it is larger than the sum of its proper divisors (2036435).

8642865793 is a wasteful number, since it uses less digits than its factorization.

8642865793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2036434.

The product of its digits is 17418240, while the sum is 58.

The square root of 8642865793 is about 92967.0145427936. The cubic root of 8642865793 is about 2052.1979830209.

The spelling of 8642865793 in words is "eight billion, six hundred forty-two million, eight hundred sixty-five thousand, seven hundred ninety-three".