1328199871 has 2 divisors, whose sum is σ = 1328199872. Its totient is φ = 1328199870.

The previous prime is 1328199863. The next prime is 1328199877. The reversal of 1328199871 is 1789918231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1328199871 - 2³ = 1328199863 is a prime.

It is a super-2 number, since 2×1328199871² = 3528229794648833282, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1328199877) 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, 664099935 + 664099936.

It is an arithmetic number, because the mean of its divisors is an integer number (664099936).

Almost surely, 2^1328199871 is an apocalyptic number.

1328199871 is a deficient number, since it is larger than the sum of its proper divisors (1).

1328199871 is an equidigital number, since it uses as much as digits as its factorization.

1328199871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 49.

The square root of 1328199871 is about 36444.4765499520. The cubic root of 1328199871 is about 1099.2280730261.

The spelling of 1328199871 in words is "one billion, three hundred twenty-eight million, one hundred ninety-nine thousand, eight hundred seventy-one".