8243572613 has 4 divisors (see below), whose sum is σ = 8435283648. Its totient is φ = 8051861580.

The previous prime is 8243572591. The next prime is 8243572621. The reversal of 8243572613 is 3162753428.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8243572613 - 2⁶ = 8243572549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8243502613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95855453 + ... + 95855538.

It is an arithmetic number, because the mean of its divisors is an integer number (2108820912).

Almost surely, 2^8243572613 is an apocalyptic number.

It is an amenable number.

8243572613 is a deficient number, since it is larger than the sum of its proper divisors (191711035).

8243572613 is a wasteful number, since it uses less digits than its factorization.

8243572613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191711034.

The product of its digits is 241920, while the sum is 41.

The square root of 8243572613 is about 90794.1221280321. The cubic root of 8243572613 is about 2020.0951343130.

The spelling of 8243572613 in words is "eight billion, two hundred forty-three million, five hundred seventy-two thousand, six hundred thirteen".