1306445141 has 6 divisors (see below), whose sum is σ = 1308711042. Its totient is φ = 1304182800.

The previous prime is 1306445137. The next prime is 1306445233. The reversal of 1306445141 is 1415446031.

It can be written as a sum of positive squares in 3 ways, for example, as 63600625 + 1242844516 = 7975^2 + 35254^2 .

It is not a de Polignac number, because 1306445141 - 2² = 1306445137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1306445941) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 686291 + ... + 688191.

It is an arithmetic number, because the mean of its divisors is an integer number (218118507).

Almost surely, 2^1306445141 is an apocalyptic number.

It is an amenable number.

1306445141 is a deficient number, since it is larger than the sum of its proper divisors (2265901).

1306445141 is an frugal number, since it uses more digits than its factorization.

1306445141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3559 (or 2730 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 1306445141 is about 36144.7802732289. The cubic root of 1306445141 is about 1093.1935467127.

The spelling of 1306445141 in words is "one billion, three hundred six million, four hundred forty-five thousand, one hundred forty-one".