1326748217 has 2 divisors, whose sum is σ = 1326748218. Its totient is φ = 1326748216.

The previous prime is 1326748211. The next prime is 1326748237. The reversal of 1326748217 is 7128476231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1101177856 + 225570361 = 33184^2 + 15019^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1326748217 is a prime.

It is not a weakly prime, because it can be changed into another prime (1326748211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 663374108 + 663374109.

It is an arithmetic number, because the mean of its divisors is an integer number (663374109).

Almost surely, 2^1326748217 is an apocalyptic number.

It is an amenable number.

1326748217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1326748217 is an equidigital number, since it uses as much as digits as its factorization.

1326748217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112896, while the sum is 41.

The square root of 1326748217 is about 36424.5551379835. Note that the first 3 decimals coincide. The cubic root of 1326748217 is about 1098.8274604988.

The spelling of 1326748217 in words is "one billion, three hundred twenty-six million, seven hundred forty-eight thousand, two hundred seventeen".