1328539169 has 4 divisors (see below), whose sum is σ = 1329818880. Its totient is φ = 1327259460.

The previous prime is 1328539159. The next prime is 1328539183. The reversal of 1328539169 is 9619358231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1328539169 - 2¹⁶ = 1328473633 is a prime.

It is a super-2 number, since 2×1328539169² = 3530032647134421122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1328539139) 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 3 ways as a sum of consecutive naturals, for example, 638297 + ... + 640374.

It is an arithmetic number, because the mean of its divisors is an integer number (332454720).

Almost surely, 2^1328539169 is an apocalyptic number.

It is an amenable number.

1328539169 is a deficient number, since it is larger than the sum of its proper divisors (1279711).

1328539169 is a wasteful number, since it uses less digits than its factorization.

1328539169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279710.

The product of its digits is 349920, while the sum is 47.

The square root of 1328539169 is about 36449.1312516499. The cubic root of 1328539169 is about 1099.3216669047.

The spelling of 1328539169 in words is "one billion, three hundred twenty-eight million, five hundred thirty-nine thousand, one hundred sixty-nine".