1328828393 has 2 divisors, whose sum is σ = 1328828394. Its totient is φ = 1328828392.

The previous prime is 1328828383. The next prime is 1328828489. The reversal of 1328828393 is 3938288231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1328748304 + 80089 = 36452^2 + 283^2 .

It is a cyclic number.

It is not a de Polignac number, because 1328828393 - 2⁴ = 1328828377 is a prime.

It is not a weakly prime, because it can be changed into another prime (1328828363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664414196 + 664414197.

It is an arithmetic number, because the mean of its divisors is an integer number (664414197).

Almost surely, 2^1328828393 is an apocalyptic number.

It is an amenable number.

1328828393 is a deficient number, since it is larger than the sum of its proper divisors (1).

1328828393 is an equidigital number, since it uses as much as digits as its factorization.

1328828393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 497664, while the sum is 47.

The square root of 1328828393 is about 36453.0985377101. The cubic root of 1328828393 is about 1099.4014355075.

The spelling of 1328828393 in words is "one billion, three hundred twenty-eight million, eight hundred twenty-eight thousand, three hundred ninety-three".