320322437849 has 2 divisors, whose sum is σ = 320322437850. Its totient is φ = 320322437848.

The previous prime is 320322437803. The next prime is 320322437857. The reversal of 320322437849 is 948734223023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 242760187849 + 77562250000 = 492707^2 + 278500^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320322437849 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (320322407849) 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, 160161218924 + 160161218925.

It is an arithmetic number, because the mean of its divisors is an integer number (160161218925).

Almost surely, 2^320322437849 is an apocalyptic number.

It is an amenable number.

320322437849 is a deficient number, since it is larger than the sum of its proper divisors (1).

320322437849 is an equidigital number, since it uses as much as digits as its factorization.

320322437849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1741824, while the sum is 47.

The spelling of 320322437849 in words is "three hundred twenty billion, three hundred twenty-two million, four hundred thirty-seven thousand, eight hundred forty-nine".