1328119885 has 4 divisors (see below), whose sum is σ = 1593743868. Its totient is φ = 1062495904.

The previous prime is 1328119799. The next prime is 1328119939. The reversal of 1328119885 is 5889118231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5889118231 = 131 ⋅44955101.

It can be written as a sum of positive squares in 2 ways, for example, as 227074761 + 1101045124 = 15069^2 + 33182^2 .

It is a cyclic number.

It is not a de Polignac number, because 1328119885 - 2¹¹ = 1328117837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132811984 + ... + 132811993.

It is an arithmetic number, because the mean of its divisors is an integer number (398435967).

Almost surely, 2^1328119885 is an apocalyptic number.

It is an amenable number.

1328119885 is a deficient number, since it is larger than the sum of its proper divisors (265623983).

1328119885 is an equidigital number, since it uses as much as digits as its factorization.

1328119885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265623982.

The product of its digits is 138240, while the sum is 46.

The square root of 1328119885 is about 36443.3791654945. The cubic root of 1328119885 is about 1099.2060069140.

The spelling of 1328119885 in words is "one billion, three hundred twenty-eight million, one hundred nineteen thousand, eight hundred eighty-five".