1812738833417 has 2 divisors, whose sum is σ = 1812738833418. Its totient is φ = 1812738833416.

The previous prime is 1812738833407. The next prime is 1812738833443. The reversal of 1812738833417 is 7143388372181.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1642470364921 + 170268468496 = 1281589^2 + 412636^2 .

It is an emirp because it is prime and its reverse (7143388372181) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1812738833417 - 2²⁰ = 1812737784841 is a prime.

It is not a weakly prime, because it can be changed into another prime (1812738833407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 906369416708 + 906369416709.

It is an arithmetic number, because the mean of its divisors is an integer number (906369416709).

Almost surely, 2^{1812738833417} is an apocalyptic number.

It is an amenable number.

1812738833417 is a deficient number, since it is larger than the sum of its proper divisors (1).

1812738833417 is an equidigital number, since it uses as much as digits as its factorization.

1812738833417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5419008, while the sum is 56.

The spelling of 1812738833417 in words is "one trillion, eight hundred twelve billion, seven hundred thirty-eight million, eight hundred thirty-three thousand, four hundred seventeen".