1328332169 has 4 divisors (see below), whose sum is σ = 1337247300. Its totient is φ = 1319417040.

The previous prime is 1328332147. The next prime is 1328332177. The reversal of 1328332169 is 9612338231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9612338231 = 29 ⋅331459939.

It can be written as a sum of positive squares in 2 ways, for example, as 288592144 + 1039740025 = 16988^2 + 32245^2 .

It is a cyclic number.

It is not a de Polignac number, because 1328332169 - 2¹⁶ = 1328266633 is a prime.

It is a super-2 number, since 2×1328332169² = 3528932702400489122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1328332129) 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, 4457342 + ... + 4457639.

It is an arithmetic number, because the mean of its divisors is an integer number (334311825).

Almost surely, 2^1328332169 is an apocalyptic number.

It is an amenable number.

1328332169 is a deficient number, since it is larger than the sum of its proper divisors (8915131).

1328332169 is an equidigital number, since it uses as much as digits as its factorization.

1328332169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8915130.

The product of its digits is 46656, while the sum is 38.

The square root of 1328332169 is about 36446.2915671814. The cubic root of 1328332169 is about 1099.2645687500.

The spelling of 1328332169 in words is "one billion, three hundred twenty-eight million, three hundred thirty-two thousand, one hundred sixty-nine".