1685703353 has 2 divisors, whose sum is σ = 1685703354. Its totient is φ = 1685703352.

The previous prime is 1685703347. The next prime is 1685703379. The reversal of 1685703353 is 3533075861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1320014224 + 365689129 = 36332^2 + 19123^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1685703353 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1685703353.

It is not a weakly prime, because it can be changed into another prime (1685703553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 842851676 + 842851677.

It is an arithmetic number, because the mean of its divisors is an integer number (842851677).

Almost surely, 2^1685703353 is an apocalyptic number.

It is an amenable number.

1685703353 is a deficient number, since it is larger than the sum of its proper divisors (1).

1685703353 is an equidigital number, since it uses as much as digits as its factorization.

1685703353 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 226800, while the sum is 41.

The square root of 1685703353 is about 41057.3178982748. The cubic root of 1685703353 is about 1190.1281205180.

The spelling of 1685703353 in words is "one billion, six hundred eighty-five million, seven hundred three thousand, three hundred fifty-three".