8205797243 has 4 divisors (see below), whose sum is σ = 9378054000. Its totient is φ = 7033540488.

The previous prime is 8205797227. The next prime is 8205797251. The reversal of 8205797243 is 3427975028.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 8205797243 - 2⁴ = 8205797227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8205797443) 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 3 ways as a sum of consecutive naturals, for example, 586128368 + ... + 586128381.

It is an arithmetic number, because the mean of its divisors is an integer number (2344513500).

Almost surely, 2^8205797243 is an apocalyptic number.

8205797243 is a deficient number, since it is larger than the sum of its proper divisors (1172256757).

8205797243 is a wasteful number, since it uses less digits than its factorization.

8205797243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1172256756.

The product of its (nonzero) digits is 846720, while the sum is 47.

The square root of 8205797243 is about 90585.8556453490. The cubic root of 8205797243 is about 2017.0047792296.

The spelling of 8205797243 in words is "eight billion, two hundred five million, seven hundred ninety-seven thousand, two hundred forty-three".