1684854473417 has 2 divisors, whose sum is σ = 1684854473418. Its totient is φ = 1684854473416.

The previous prime is 1684854473413. The next prime is 1684854473453. The reversal of 1684854473417 is 7143744584861.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1674135805456 + 10718667961 = 1293884^2 + 103531^2 .

It is an emirp because it is prime and its reverse (7143744584861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1684854473417 - 2² = 1684854473413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1684854473417.

It is not a weakly prime, because it can be changed into another prime (1684854473411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 842427236708 + 842427236709.

It is an arithmetic number, because the mean of its divisors is an integer number (842427236709).

Almost surely, 2^{1684854473417} is an apocalyptic number.

It is an amenable number.

1684854473417 is a deficient number, since it is larger than the sum of its proper divisors (1).

1684854473417 is an equidigital number, since it uses as much as digits as its factorization.

1684854473417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72253440, while the sum is 62.

The spelling of 1684854473417 in words is "one trillion, six hundred eighty-four billion, eight hundred fifty-four million, four hundred seventy-three thousand, four hundred seventeen".