1685703379 has 2 divisors, whose sum is σ = 1685703380. Its totient is φ = 1685703378.

The previous prime is 1685703353. The next prime is 1685703469. The reversal of 1685703379 is 9733075861.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1685703379 - 2⁵ = 1685703347 is a prime.

It is a super-3 number, since 3×1685703379³ (a number of 29 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1685703779) 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, 842851689 + 842851690.

It is an arithmetic number, because the mean of its divisors is an integer number (842851690).

Almost surely, 2^1685703379 is an apocalyptic number.

1685703379 is a deficient number, since it is larger than the sum of its proper divisors (1).

1685703379 is an equidigital number, since it uses as much as digits as its factorization.

1685703379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 952560, while the sum is 49.

The square root of 1685703379 is about 41057.3182149054. The cubic root of 1685703379 is about 1190.1281266368.

The spelling of 1685703379 in words is "one billion, six hundred eighty-five million, seven hundred three thousand, three hundred seventy-nine".