1328303657 has 2 divisors, whose sum is σ = 1328303658. Its totient is φ = 1328303656.

The previous prime is 1328303651. The next prime is 1328303677. The reversal of 1328303657 is 7563038231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1179853801 + 148449856 = 34349^2 + 12184^2 .

It is a cyclic number.

It is not a de Polignac number, because 1328303657 - 2¹² = 1328299561 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1328303657.

It is not a weakly prime, because it can be changed into another prime (1328303651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664151828 + 664151829.

It is an arithmetic number, because the mean of its divisors is an integer number (664151829).

Almost surely, 2^1328303657 is an apocalyptic number.

It is an amenable number.

1328303657 is a deficient number, since it is larger than the sum of its proper divisors (1).

1328303657 is an equidigital number, since it uses as much as digits as its factorization.

1328303657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 1328303657 is about 36445.9004141755. The cubic root of 1328303657 is about 1099.2567036351.

The spelling of 1328303657 in words is "one billion, three hundred twenty-eight million, three hundred three thousand, six hundred fifty-seven".