1328709071 has 2 divisors, whose sum is σ = 1328709072. Its totient is φ = 1328709070.

The previous prime is 1328709061. The next prime is 1328709077. The reversal of 1328709071 is 1709078231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1328709071 - 2³⁰ = 254967247 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1328709077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664354535 + 664354536.

It is an arithmetic number, because the mean of its divisors is an integer number (664354536).

Almost surely, 2^1328709071 is an apocalyptic number.

1328709071 is a deficient number, since it is larger than the sum of its proper divisors (1).

1328709071 is an equidigital number, since it uses as much as digits as its factorization.

1328709071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 38.

The square root of 1328709071 is about 36451.4618499725. The cubic root of 1328709071 is about 1099.3685276453.

The spelling of 1328709071 in words is "one billion, three hundred twenty-eight million, seven hundred nine thousand, seventy-one".