328957919 has 2 divisors, whose sum is σ = 328957920. Its totient is φ = 328957918.

The previous prime is 328957903. The next prime is 328957921. The reversal of 328957919 is 919759823.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 328957919 - 2⁴ = 328957903 is a prime.

It is a super-2 number, since 2×328957919² = 216426624945621122, which contains 22 as substring.

Together with 328957921, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (328957949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164478959 + 164478960.

It is an arithmetic number, because the mean of its divisors is an integer number (164478960).

Almost surely, 2^328957919 is an apocalyptic number.

328957919 is a deficient number, since it is larger than the sum of its proper divisors (1).

328957919 is an equidigital number, since it uses as much as digits as its factorization.

328957919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1224720, while the sum is 53.

The square root of 328957919 is about 18137.1971098072. The cubic root of 328957919 is about 690.3141599575.

The spelling of 328957919 in words is "three hundred twenty-eight million, nine hundred fifty-seven thousand, nine hundred nineteen".