1684854473243 has 2 divisors, whose sum is σ = 1684854473244. Its totient is φ = 1684854473242.

The previous prime is 1684854473233. The next prime is 1684854473257. The reversal of 1684854473243 is 3423744584861.

It is a weak prime.

It is an emirp because it is prime and its reverse (3423744584861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1684854473243 - 2¹⁸ = 1684854211099 is a prime.

It is not a weakly prime, because it can be changed into another prime (1684854473213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 842427236621 + 842427236622.

It is an arithmetic number, because the mean of its divisors is an integer number (842427236622).

Almost surely, 2^{1684854473243} is an apocalyptic number.

1684854473243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1684854473243 is an equidigital number, since it uses as much as digits as its factorization.

1684854473243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61931520, while the sum is 59.

The spelling of 1684854473243 in words is "one trillion, six hundred eighty-four billion, eight hundred fifty-four million, four hundred seventy-three thousand, two hundred forty-three".