328509019 has 2 divisors, whose sum is σ = 328509020. Its totient is φ = 328509018.

The previous prime is 328508959. The next prime is 328509029. The reversal of 328509019 is 910905823.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-328509019 is a prime.

It is a super-2 number, since 2×328509019² = 215836351128684722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (328509029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164254509 + 164254510.

It is an arithmetic number, because the mean of its divisors is an integer number (164254510).

Almost surely, 2^328509019 is an apocalyptic number.

328509019 is a deficient number, since it is larger than the sum of its proper divisors (1).

328509019 is an equidigital number, since it uses as much as digits as its factorization.

328509019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 328509019 is about 18124.8177646011. The cubic root of 328509019 is about 690.0000133025. Note that the first 4 decimals are identical.

The spelling of 328509019 in words is "three hundred twenty-eight million, five hundred nine thousand, nineteen".