1328748293 has 2 divisors, whose sum is σ = 1328748294. Its totient is φ = 1328748292.

The previous prime is 1328748287. The next prime is 1328748301. The reversal of 1328748293 is 3928478231.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1249056964 + 79691329 = 35342^2 + 8927^2 .

It is an emirp because it is prime and its reverse (3928478231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1328748293 - 2⁴ = 1328748277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1328748283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664374146 + 664374147.

It is an arithmetic number, because the mean of its divisors is an integer number (664374147).

Almost surely, 2^1328748293 is an apocalyptic number.

It is an amenable number.

1328748293 is a deficient number, since it is larger than the sum of its proper divisors (1).

1328748293 is an equidigital number, since it uses as much as digits as its factorization.

1328748293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 47.

The square root of 1328748293 is about 36451.9998491166. Note that the first 3 decimals coincide. The cubic root of 1328748293 is about 1099.3793449138.

The spelling of 1328748293 in words is "one billion, three hundred twenty-eight million, seven hundred forty-eight thousand, two hundred ninety-three".