1328589369 has 6 divisors (see below), whose sum is σ = 1919073546. Its totient is φ = 885726240.

The previous prime is 1328589359. The next prime is 1328589391. The reversal of 1328589369 is 9639858231.

1328589369 is a `hidden beast` number, since 1 + 3 + 28 + 589 + 36 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 900720144 + 427869225 = 30012^2 + 20685^2 .

It is not a de Polignac number, because 1328589369 - 2¹² = 1328585273 is a prime.

It is a super-2 number, since 2×1328589369² = 3530299422839636322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1328589329) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 73810512 + ... + 73810529.

It is an arithmetic number, because the mean of its divisors is an integer number (319845591).

Almost surely, 2^1328589369 is an apocalyptic number.

It is an amenable number.

1328589369 is a deficient number, since it is larger than the sum of its proper divisors (590484177).

1328589369 is a wasteful number, since it uses less digits than its factorization.

1328589369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147621047 (or 147621044 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 54.

The square root of 1328589369 is about 36449.8198760982. The cubic root of 1328589369 is about 1099.3355130032.

The spelling of 1328589369 in words is "one billion, three hundred twenty-eight million, five hundred eighty-nine thousand, three hundred sixty-nine".