328773791 has 2 divisors, whose sum is σ = 328773792. Its totient is φ = 328773790.

The previous prime is 328773773. The next prime is 328773811. The reversal of 328773791 is 197377823.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 328773791 - 2¹⁰ = 328772767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (328773721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164386895 + 164386896.

It is an arithmetic number, because the mean of its divisors is an integer number (164386896).

Almost surely, 2^328773791 is an apocalyptic number.

328773791 is a deficient number, since it is larger than the sum of its proper divisors (1).

328773791 is an equidigital number, since it uses as much as digits as its factorization.

328773791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 444528, while the sum is 47.

The square root of 328773791 is about 18132.1204220576. The cubic root of 328773791 is about 690.1853391360.

The spelling of 328773791 in words is "three hundred twenty-eight million, seven hundred seventy-three thousand, seven hundred ninety-one".