8243161693 has 16 divisors (see below), whose sum is σ = 9090305280. Its totient is φ = 7427318976.

The previous prime is 8243161691. The next prime is 8243161697. The reversal of 8243161693 is 3961613428.

It is a cyclic number.

It is not a de Polignac number, because 8243161693 - 2¹ = 8243161691 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 (8243161691) 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 15 ways as a sum of consecutive naturals, for example, 213771 + ... + 249367.

It is an arithmetic number, because the mean of its divisors is an integer number (568144080).

Almost surely, 2^8243161693 is an apocalyptic number.

It is an amenable number.

8243161693 is a deficient number, since it is larger than the sum of its proper divisors (847143587).

8243161693 is a wasteful number, since it uses less digits than its factorization.

8243161693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36036.

The product of its digits is 186624, while the sum is 43.

The square root of 8243161693 is about 90791.8591780122. The cubic root of 8243161693 is about 2020.0615683126.

The spelling of 8243161693 in words is "eight billion, two hundred forty-three million, one hundred sixty-one thousand, six hundred ninety-three".