1328918779 has 2 divisors, whose sum is σ = 1328918780. Its totient is φ = 1328918778.

The previous prime is 1328918753. The next prime is 1328918783. The reversal of 1328918779 is 9778198231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1328918779 - 2⁷ = 1328918651 is a prime.

It is not a weakly prime, because it can be changed into another prime (1328918879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664459389 + 664459390.

It is an arithmetic number, because the mean of its divisors is an integer number (664459390).

Almost surely, 2^1328918779 is an apocalyptic number.

1328918779 is a deficient number, since it is larger than the sum of its proper divisors (1).

1328918779 is an equidigital number, since it uses as much as digits as its factorization.

1328918779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1524096, while the sum is 55.

The square root of 1328918779 is about 36454.3382740655. The cubic root of 1328918779 is about 1099.4263617874.

The spelling of 1328918779 in words is "one billion, three hundred twenty-eight million, nine hundred eighteen thousand, seven hundred seventy-nine".