1328813401 has 2 divisors, whose sum is σ = 1328813402. Its totient is φ = 1328813400.

The previous prime is 1328813383. The next prime is 1328813413. The reversal of 1328813401 is 1043188231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1251461376 + 77352025 = 35376^2 + 8795^2 .

It is an emirp because it is prime and its reverse (1043188231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1328813401 - 2⁹ = 1328812889 is a prime.

It is not a weakly prime, because it can be changed into another prime (1328813501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664406700 + 664406701.

It is an arithmetic number, because the mean of its divisors is an integer number (664406701).

Almost surely, 2^1328813401 is an apocalyptic number.

It is an amenable number.

1328813401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1328813401 is an equidigital number, since it uses as much as digits as its factorization.

1328813401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 1328813401 is about 36452.8929030331. The cubic root of 1328813401 is about 1099.3973009660.

The spelling of 1328813401 in words is "one billion, three hundred twenty-eight million, eight hundred thirteen thousand, four hundred one".