1685414317 has 2 divisors, whose sum is σ = 1685414318. Its totient is φ = 1685414316.

The previous prime is 1685414303. The next prime is 1685414327. The reversal of 1685414317 is 7134145861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1544018436 + 141395881 = 39294^2 + 11891^2 .

It is a cyclic number.

It is not a de Polignac number, because 1685414317 - 2⁷ = 1685414189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1685414317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1685414327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 842707158 + 842707159.

It is an arithmetic number, because the mean of its divisors is an integer number (842707159).

Almost surely, 2^1685414317 is an apocalyptic number.

It is an amenable number.

1685414317 is a deficient number, since it is larger than the sum of its proper divisors (1).

1685414317 is an equidigital number, since it uses as much as digits as its factorization.

1685414317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 40.

The square root of 1685414317 is about 41053.7978389332. The cubic root of 1685414317 is about 1190.0600955928.

The spelling of 1685414317 in words is "one billion, six hundred eighty-five million, four hundred fourteen thousand, three hundred seventeen".