328158673 has 2 divisors, whose sum is σ = 328158674. Its totient is φ = 328158672.

The previous prime is 328158647. The next prime is 328158679. The reversal of 328158673 is 376851823.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 192016449 + 136142224 = 13857^2 + 11668^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-328158673 is a prime.

It is a super-2 number, since 2×328158673² = 215376229330241858, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (328158679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164079336 + 164079337.

It is an arithmetic number, because the mean of its divisors is an integer number (164079337).

Almost surely, 2^328158673 is an apocalyptic number.

It is an amenable number.

328158673 is a deficient number, since it is larger than the sum of its proper divisors (1).

328158673 is an equidigital number, since it uses as much as digits as its factorization.

328158673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 43.

The square root of 328158673 is about 18115.1503719953. The cubic root of 328158673 is about 689.7546372575.

The spelling of 328158673 in words is "three hundred twenty-eight million, one hundred fifty-eight thousand, six hundred seventy-three".