320185676189 has 2 divisors, whose sum is σ = 320185676190. Its totient is φ = 320185676188.

The previous prime is 320185676159. The next prime is 320185676201. The reversal of 320185676189 is 981676581023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 295020612964 + 25165063225 = 543158^2 + 158635^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320185676189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320185676159) 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, 160092838094 + 160092838095.

It is an arithmetic number, because the mean of its divisors is an integer number (160092838095).

Almost surely, 2^320185676189 is an apocalyptic number.

It is an amenable number.

320185676189 is a deficient number, since it is larger than the sum of its proper divisors (1).

320185676189 is an equidigital number, since it uses as much as digits as its factorization.

320185676189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4354560, while the sum is 56.

The spelling of 320185676189 in words is "three hundred twenty billion, one hundred eighty-five million, six hundred seventy-six thousand, one hundred eighty-nine".