1328306279 has 2 divisors, whose sum is σ = 1328306280. Its totient is φ = 1328306278.

The previous prime is 1328306267. The next prime is 1328306297. The reversal of 1328306279 is 9726038231.

Together with next prime (1328306297) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1328306279 - 2¹⁶ = 1328240743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1328306209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664153139 + 664153140.

It is an arithmetic number, because the mean of its divisors is an integer number (664153140).

Almost surely, 2^1328306279 is an apocalyptic number.

1328306279 is a deficient number, since it is larger than the sum of its proper divisors (1).

1328306279 is an equidigital number, since it uses as much as digits as its factorization.

1328306279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 1328306279 is about 36445.9363852817. The cubic root of 1328306279 is about 1099.2574269258.

The spelling of 1328306279 in words is "one billion, three hundred twenty-eight million, three hundred six thousand, two hundred seventy-nine".