1329433169 has 2 divisors, whose sum is σ = 1329433170. Its totient is φ = 1329433168.

The previous prime is 1329433151. The next prime is 1329433219. The reversal of 1329433169 is 9613349231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 794112400 + 535320769 = 28180^2 + 23137^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1329433169 is a prime.

It is a super-2 number, since 2×1329433169² = 3534785101674765122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1329438169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664716584 + 664716585.

It is an arithmetic number, because the mean of its divisors is an integer number (664716585).

Almost surely, 2^1329433169 is an apocalyptic number.

It is an amenable number.

1329433169 is a deficient number, since it is larger than the sum of its proper divisors (1).

1329433169 is an equidigital number, since it uses as much as digits as its factorization.

1329433169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 104976, while the sum is 41.

The square root of 1329433169 is about 36461.3928560059. The cubic root of 1329433169 is about 1099.5681966341.

The spelling of 1329433169 in words is "one billion, three hundred twenty-nine million, four hundred thirty-three thousand, one hundred sixty-nine".