8242338661 has 2 divisors, whose sum is σ = 8242338662. Its totient is φ = 8242338660.

The previous prime is 8242338649. The next prime is 8242338829. The reversal of 8242338661 is 1668332428.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8042681761 + 199656900 = 89681^2 + 14130^2 .

It is a cyclic number.

It is not a de Polignac number, because 8242338661 - 2¹⁵ = 8242305893 is a prime.

It is a super-2 number, since 2×8242338661² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8242338061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4121169330 + 4121169331.

It is an arithmetic number, because the mean of its divisors is an integer number (4121169331).

Almost surely, 2^8242338661 is an apocalyptic number.

It is an amenable number.

8242338661 is a deficient number, since it is larger than the sum of its proper divisors (1).

8242338661 is an equidigital number, since it uses as much as digits as its factorization.

8242338661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 331776, while the sum is 43.

The square root of 8242338661 is about 90787.3265439621. The cubic root of 8242338661 is about 2019.9943355885.

The spelling of 8242338661 in words is "eight billion, two hundred forty-two million, three hundred thirty-eight thousand, six hundred sixty-one".