2182944791309 has 6 divisors (see below), whose sum is σ = 2258226980490. Its totient is φ = 2107663150880.

The previous prime is 2182944791257. The next prime is 2182944791327. The reversal of 2182944791309 is 9031974492812.

It can be written as a sum of positive squares in 3 ways, for example, as 126078255625 + 2056866535684 = 355075^2 + 1434178^2 .

It is not a de Polignac number, because 2182944791309 - 2¹² = 2182944787213 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 (2182944791359) 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, 7819289 + ... + 8093649.

It is an arithmetic number, because the mean of its divisors is an integer number (376371163415).

Almost surely, 2^{2182944791309} is an apocalyptic number.

2182944791309 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2182944791309 is a deficient number, since it is larger than the sum of its proper divisors (75282189181).

2182944791309 is an frugal number, since it uses more digits than its factorization.

2182944791309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548751 (or 274390 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 59.

The spelling of 2182944791309 in words is "two trillion, one hundred eighty-two billion, nine hundred forty-four million, seven hundred ninety-one thousand, three hundred nine".