1328565523 has 2 divisors, whose sum is σ = 1328565524. Its totient is φ = 1328565522.

The previous prime is 1328565473. The next prime is 1328565527. The reversal of 1328565523 is 3255658231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1328565523 - 2¹³ = 1328557331 is a prime.

It is not a weakly prime, because it can be changed into another prime (1328565527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664282761 + 664282762.

It is an arithmetic number, because the mean of its divisors is an integer number (664282762).

Almost surely, 2^1328565523 is an apocalyptic number.

1328565523 is a deficient number, since it is larger than the sum of its proper divisors (1).

1328565523 is an equidigital number, since it uses as much as digits as its factorization.

1328565523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216000, while the sum is 40.

The square root of 1328565523 is about 36449.4927673898. The cubic root of 1328565523 is about 1099.3289358741.

The spelling of 1328565523 in words is "one billion, three hundred twenty-eight million, five hundred sixty-five thousand, five hundred twenty-three".