1328904169 has 2 divisors, whose sum is σ = 1328904170. Its totient is φ = 1328904168.

The previous prime is 1328904151. The next prime is 1328904193. The reversal of 1328904169 is 9614098231.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1239884944 + 89019225 = 35212^2 + 9435^2 .

It is a cyclic number.

It is not a de Polignac number, because 1328904169 - 2¹⁷ = 1328773097 is a prime.

It is a super-2 number, since 2×1328904169² = 3531972580771161122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1328905169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664452084 + 664452085.

It is an arithmetic number, because the mean of its divisors is an integer number (664452085).

Almost surely, 2^1328904169 is an apocalyptic number.

It is an amenable number.

1328904169 is a deficient number, since it is larger than the sum of its proper divisors (1).

1328904169 is an equidigital number, since it uses as much as digits as its factorization.

1328904169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 1328904169 is about 36454.1378858423. The cubic root of 1328904169 is about 1099.4223327781.

The spelling of 1328904169 in words is "one billion, three hundred twenty-eight million, nine hundred four thousand, one hundred sixty-nine".