1328056787 has 2 divisors, whose sum is σ = 1328056788. Its totient is φ = 1328056786.

The previous prime is 1328056753. The next prime is 1328056819. The reversal of 1328056787 is 7876508231.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1328056787 - 2²⁶ = 1260947923 is a prime.

It is not a weakly prime, because it can be changed into another prime (1328056727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664028393 + 664028394.

It is an arithmetic number, because the mean of its divisors is an integer number (664028394).

Almost surely, 2^1328056787 is an apocalyptic number.

1328056787 is a deficient number, since it is larger than the sum of its proper divisors (1).

1328056787 is an equidigital number, since it uses as much as digits as its factorization.

1328056787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 564480, while the sum is 47.

The square root of 1328056787 is about 36442.5134561270. The cubic root of 1328056787 is about 1099.1885991484.

The spelling of 1328056787 in words is "one billion, three hundred twenty-eight million, fifty-six thousand, seven hundred eighty-seven".