1306327844809 has 15 divisors (see below), whose sum is σ = 1415393971953. Its totient is φ = 1205662787784.

The previous prime is 1306327844777. The next prime is 1306327844813. The reversal of 1306327844809 is 9084487236031.

The square root of 1306327844809 is 1142947.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 647698211209 + 658629633600 = 804797^2 + 811560^2 .

It is not a de Polignac number, because 1306327844809 - 2⁵ = 1306327844777 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1306327844809.

It is not an unprimeable number, because it can be changed into a prime (1306327844819) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 193154662 + ... + 193161424.

Almost surely, 2^{1306327844809} is an apocalyptic number.

1306327844809 is the 1142947-th square number.

1306327844809 is the 571474-th centered octagonal number.

It is an amenable number.

1306327844809 is a deficient number, since it is larger than the sum of its proper divisors (109066127144).

1306327844809 is an frugal number, since it uses more digits than its factorization.

1306327844809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13578 (or 6776 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 55.

The spelling of 1306327844809 in words is "one trillion, three hundred six billion, three hundred twenty-seven million, eight hundred forty-four thousand, eight hundred nine".