328915957 has 2 divisors, whose sum is σ = 328915958. Its totient is φ = 328915956.

The previous prime is 328915879. The next prime is 328915997. The reversal of 328915957 is 759519823.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 328298161 + 617796 = 18119^2 + 786^2 .

It is a cyclic number.

It is not a de Polignac number, because 328915957 - 2¹⁵ = 328883189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 328915957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (328915997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164457978 + 164457979.

It is an arithmetic number, because the mean of its divisors is an integer number (164457979).

Almost surely, 2^328915957 is an apocalyptic number.

It is an amenable number.

328915957 is a deficient number, since it is larger than the sum of its proper divisors (1).

328915957 is an equidigital number, since it uses as much as digits as its factorization.

328915957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 680400, while the sum is 49.

The square root of 328915957 is about 18136.0402789584. The cubic root of 328915957 is about 690.2848064618.

The spelling of 328915957 in words is "three hundred twenty-eight million, nine hundred fifteen thousand, nine hundred fifty-seven".