1328605429 has 2 divisors, whose sum is σ = 1328605430. Its totient is φ = 1328605428.

The previous prime is 1328605387. The next prime is 1328605441. The reversal of 1328605429 is 9245068231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 673143025 + 655462404 = 25945^2 + 25602^2 .

It is a cyclic number.

It is not a de Polignac number, because 1328605429 - 2²⁵ = 1295050997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1328605391 and 1328605400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1328605459) 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 as a sum of consecutive naturals, namely, 664302714 + 664302715.

It is an arithmetic number, because the mean of its divisors is an integer number (664302715).

Almost surely, 2^1328605429 is an apocalyptic number.

It is an amenable number.

1328605429 is a deficient number, since it is larger than the sum of its proper divisors (1).

1328605429 is an equidigital number, since it uses as much as digits as its factorization.

1328605429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 1328605429 is about 36450.0401783043. The cubic root of 1328605429 is about 1099.3399425778.

The spelling of 1328605429 in words is "one billion, three hundred twenty-eight million, six hundred five thousand, four hundred twenty-nine".