1685033370049 has 2 divisors, whose sum is σ = 1685033370050. Its totient is φ = 1685033370048.

The previous prime is 1685033370023. The next prime is 1685033370091. The reversal of 1685033370049 is 9400733305861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1643011240000 + 42022130049 = 1281800^2 + 204993^2 .

It is an emirp because it is prime and its reverse (9400733305861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1685033370049 - 2¹¹ = 1685033368001 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1685033369984 and 1685033370011.

It is not a weakly prime, because it can be changed into another prime (1685036370049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 842516685024 + 842516685025.

It is an arithmetic number, because the mean of its divisors is an integer number (842516685025).

Almost surely, 2^{1685033370049} is an apocalyptic number.

It is an amenable number.

1685033370049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1685033370049 is an equidigital number, since it uses as much as digits as its factorization.

1685033370049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1632960, while the sum is 49.

The spelling of 1685033370049 in words is "one trillion, six hundred eighty-five billion, thirty-three million, three hundred seventy thousand, forty-nine".