1328448601 has 2 divisors, whose sum is σ = 1328448602. Its totient is φ = 1328448600.

The previous prime is 1328448587. The next prime is 1328448637. The reversal of 1328448601 is 1068448231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 900000000 + 428448601 = 30000^2 + 20699^2 .

It is an emirp because it is prime and its reverse (1068448231) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1328448601 is a prime.

It is not a weakly prime, because it can be changed into another prime (1328448691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664224300 + 664224301.

It is an arithmetic number, because the mean of its divisors is an integer number (664224301).

Almost surely, 2^1328448601 is an apocalyptic number.

It is an amenable number.

1328448601 is a deficient number, since it is larger than the sum of its proper divisors (1).

1328448601 is an equidigital number, since it uses as much as digits as its factorization.

1328448601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 1328448601 is about 36447.8888414679. Note that the first 4 decimals coincide. The cubic root of 1328448601 is about 1099.2966856748.

The spelling of 1328448601 in words is "one billion, three hundred twenty-eight million, four hundred forty-eight thousand, six hundred one".