328609189 has 2 divisors, whose sum is σ = 328609190. Its totient is φ = 328609188.

The previous prime is 328609163. The next prime is 328609223. The reversal of 328609189 is 981906823.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 241336225 + 87272964 = 15535^2 + 9342^2 .

It is a cyclic number.

It is not a de Polignac number, because 328609189 - 2¹³ = 328600997 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (328604189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164304594 + 164304595.

It is an arithmetic number, because the mean of its divisors is an integer number (164304595).

Almost surely, 2^328609189 is an apocalyptic number.

It is an amenable number.

328609189 is a deficient number, since it is larger than the sum of its proper divisors (1).

328609189 is an equidigital number, since it uses as much as digits as its factorization.

328609189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 328609189 is about 18127.5808921102. The cubic root of 328609189 is about 690.0701384978.

The spelling of 328609189 in words is "three hundred twenty-eight million, six hundred nine thousand, one hundred eighty-nine".