8213159329 has 2 divisors, whose sum is σ = 8213159330. Its totient is φ = 8213159328.

The previous prime is 8213159299. The next prime is 8213159347. The reversal of 8213159329 is 9239513128.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5827032225 + 2386127104 = 76335^2 + 48848^2 .

It is a cyclic number.

It is not a de Polignac number, because 8213159329 - 2¹³ = 8213151137 is a prime.

It is not a weakly prime, because it can be changed into another prime (8213159359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4106579664 + 4106579665.

It is an arithmetic number, because the mean of its divisors is an integer number (4106579665).

Almost surely, 2^8213159329 is an apocalyptic number.

It is an amenable number.

8213159329 is a deficient number, since it is larger than the sum of its proper divisors (1).

8213159329 is an equidigital number, since it uses as much as digits as its factorization.

8213159329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 43.

The square root of 8213159329 is about 90626.4824927019. The cubic root of 8213159329 is about 2017.6078050971.

The spelling of 8213159329 in words is "eight billion, two hundred thirteen million, one hundred fifty-nine thousand, three hundred twenty-nine".