8145322309 has 2 divisors, whose sum is σ = 8145322310. Its totient is φ = 8145322308.

The previous prime is 8145322267. The next prime is 8145322321. The reversal of 8145322309 is 9032235418.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8140009284 + 5313025 = 90222^2 + 2305^2 .

It is a cyclic number.

It is not a de Polignac number, because 8145322309 - 2²⁷ = 8011104581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8145322369) 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 as a sum of consecutive naturals, namely, 4072661154 + 4072661155.

It is an arithmetic number, because the mean of its divisors is an integer number (4072661155).

Almost surely, 2^8145322309 is an apocalyptic number.

It is an amenable number.

8145322309 is a deficient number, since it is larger than the sum of its proper divisors (1).

8145322309 is an equidigital number, since it uses as much as digits as its factorization.

8145322309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 8145322309 is about 90251.4393735635. The cubic root of 8145322309 is about 2012.0375952098.

The spelling of 8145322309 in words is "eight billion, one hundred forty-five million, three hundred twenty-two thousand, three hundred nine".