1328402671 has 2 divisors, whose sum is σ = 1328402672. Its totient is φ = 1328402670.

The previous prime is 1328402599. The next prime is 1328402693. The reversal of 1328402671 is 1762048231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1328402671 - 2¹³ = 1328394479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1328402171) 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, 664201335 + 664201336.

It is an arithmetic number, because the mean of its divisors is an integer number (664201336).

Almost surely, 2^1328402671 is an apocalyptic number.

1328402671 is a deficient number, since it is larger than the sum of its proper divisors (1).

1328402671 is an equidigital number, since it uses as much as digits as its factorization.

1328402671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 1328402671 is about 36447.2587583758. The cubic root of 1328402671 is about 1099.2840164408.

The spelling of 1328402671 in words is "one billion, three hundred twenty-eight million, four hundred two thousand, six hundred seventy-one".