328705193 has 2 divisors, whose sum is σ = 328705194. Its totient is φ = 328705192.

The previous prime is 328705189. The next prime is 328705211. The reversal of 328705193 is 391507823.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 303735184 + 24970009 = 17428^2 + 4997^2 .

It is a cyclic number.

It is not a de Polignac number, because 328705193 - 2² = 328705189 is a prime.

It is equal to p_17719337 and since 328705193 and 17719337 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (328705123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164352596 + 164352597.

It is an arithmetic number, because the mean of its divisors is an integer number (164352597).

Almost surely, 2^328705193 is an apocalyptic number.

It is an amenable number.

328705193 is a deficient number, since it is larger than the sum of its proper divisors (1).

328705193 is an equidigital number, since it uses as much as digits as its factorization.

328705193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 328705193 is about 18130.2287078790. The cubic root of 328705193 is about 690.1373338626.

The spelling of 328705193 in words is "three hundred twenty-eight million, seven hundred five thousand, one hundred ninety-three".