1327343557 has 2 divisors, whose sum is σ = 1327343558. Its totient is φ = 1327343556.

The previous prime is 1327343519. The next prime is 1327343569. The reversal of 1327343557 is 7553437231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 917726436 + 409617121 = 30294^2 + 20239^2 .

It is an emirp because it is prime and its reverse (7553437231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1327343557 - 2⁷ = 1327343429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1327343657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 663671778 + 663671779.

It is an arithmetic number, because the mean of its divisors is an integer number (663671779).

Almost surely, 2^1327343557 is an apocalyptic number.

It is an amenable number.

1327343557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1327343557 is an equidigital number, since it uses as much as digits as its factorization.

1327343557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 264600, while the sum is 40.

The square root of 1327343557 is about 36432.7264557568. The cubic root of 1327343557 is about 1098.9917916329.

The spelling of 1327343557 in words is "one billion, three hundred twenty-seven million, three hundred forty-three thousand, five hundred fifty-seven".