1328604885 has 12 divisors (see below), whose sum is σ = 2302915212. Its totient is φ = 708589248.

The previous prime is 1328604863. The next prime is 1328604889. The reversal of 1328604885 is 5884068231.

1328604885 is a `hidden beast` number, since 1 + 32 + 8 + 604 + 8 + 8 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 228886641 + 1099718244 = 15129^2 + 33162^2 .

It is not a de Polignac number, because 1328604885 - 2⁹ = 1328604373 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 29524553 = 1328604885 / (1 + 3 + 2 + 8 + 6 + 0 + 4 + 8 + 8 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 1328604885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1328604889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14762232 + ... + 14762321.

It is an arithmetic number, because the mean of its divisors is an integer number (191909601).

Almost surely, 2^1328604885 is an apocalyptic number.

1328604885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1328604885 is a deficient number, since it is larger than the sum of its proper divisors (974310327).

1328604885 is a wasteful number, since it uses less digits than its factorization.

1328604885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29524564 (or 29524561 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The square root of 1328604885 is about 36450.0327160347. The cubic root of 1328604885 is about 1099.3397925355.

The spelling of 1328604885 in words is "one billion, three hundred twenty-eight million, six hundred four thousand, eight hundred eighty-five".