1328719979 has 2 divisors, whose sum is σ = 1328719980. Its totient is φ = 1328719978.

The previous prime is 1328719963. The next prime is 1328719993. The reversal of 1328719979 is 9799178231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1328719979 - 2⁴ = 1328719963 is a prime.

It is not a weakly prime, because it can be changed into another prime (1328719279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664359989 + 664359990.

It is an arithmetic number, because the mean of its divisors is an integer number (664359990).

Almost surely, 2^1328719979 is an apocalyptic number.

1328719979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1328719979 is an equidigital number, since it uses as much as digits as its factorization.

1328719979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1714608, while the sum is 56.

The square root of 1328719979 is about 36451.6114732943. The cubic root of 1328719979 is about 1099.3715360489.

The spelling of 1328719979 in words is "one billion, three hundred twenty-eight million, seven hundred nineteen thousand, nine hundred seventy-nine".