328621219 has 2 divisors, whose sum is σ = 328621220. Its totient is φ = 328621218.

The previous prime is 328621193. The next prime is 328621259. The reversal of 328621219 is 912126823.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 328621219 - 2⁵ = 328621187 is a prime.

It is a super-2 number, since 2×328621219² = 215983811154091922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (328621259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164310609 + 164310610.

It is an arithmetic number, because the mean of its divisors is an integer number (164310610).

Almost surely, 2^328621219 is an apocalyptic number.

328621219 is a deficient number, since it is larger than the sum of its proper divisors (1).

328621219 is an equidigital number, since it uses as much as digits as its factorization.

328621219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 34.

The square root of 328621219 is about 18127.9127038940. The cubic root of 328621219 is about 690.0785592833.

The spelling of 328621219 in words is "three hundred twenty-eight million, six hundred twenty-one thousand, two hundred nineteen".