1328004173 has 2 divisors, whose sum is σ = 1328004174. Its totient is φ = 1328004172.

The previous prime is 1328004149. The next prime is 1328004229. The reversal of 1328004173 is 3714008231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 956170084 + 371834089 = 30922^2 + 19283^2 .

It is a cyclic number.

It is not a de Polignac number, because 1328004173 - 2¹⁶ = 1327938637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1328004143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664002086 + 664002087.

It is an arithmetic number, because the mean of its divisors is an integer number (664002087).

Almost surely, 2^1328004173 is an apocalyptic number.

It is an amenable number.

1328004173 is a deficient number, since it is larger than the sum of its proper divisors (1).

1328004173 is an equidigital number, since it uses as much as digits as its factorization.

1328004173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 1328004173 is about 36441.7915723143. The cubic root of 1328004173 is about 1099.1740833352.

The spelling of 1328004173 in words is "one billion, three hundred twenty-eight million, four thousand, one hundred seventy-three".