1328605807 has 2 divisors, whose sum is σ = 1328605808. Its totient is φ = 1328605806.

The previous prime is 1328605793. The next prime is 1328605819. The reversal of 1328605807 is 7085068231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1328605807 - 2¹⁹ = 1328081519 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1328605807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1328605867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664302903 + 664302904.

It is an arithmetic number, because the mean of its divisors is an integer number (664302904).

Almost surely, 2^1328605807 is an apocalyptic number.

1328605807 is a deficient number, since it is larger than the sum of its proper divisors (1).

1328605807 is an equidigital number, since it uses as much as digits as its factorization.

1328605807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 1328605807 is about 36450.0453634834. The cubic root of 1328605807 is about 1099.3400468351.

The spelling of 1328605807 in words is "one billion, three hundred twenty-eight million, six hundred five thousand, eight hundred seven".