1685852885 has 16 divisors (see below), whose sum is σ = 2062836720. Its totient is φ = 1322181120.

The previous prime is 1685852869. The next prime is 1685852893. The reversal of 1685852885 is 5882585861.

It can be written as a sum of positive squares in 8 ways, for example, as 42523441 + 1643329444 = 6521^2 + 40538^2 .

It is not a de Polignac number, because 1685852885 - 2⁴ = 1685852869 is a prime.

It is a super-3 number, since 3×1685852885³ (a number of 29 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1685852885.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 603071 + ... + 605859.

It is an arithmetic number, because the mean of its divisors is an integer number (128927295).

Almost surely, 2^1685852885 is an apocalyptic number.

It is an amenable number.

1685852885 is a deficient number, since it is larger than the sum of its proper divisors (376983835).

1685852885 is a wasteful number, since it uses less digits than its factorization.

1685852885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5128.

The product of its digits is 6144000, while the sum is 56.

The square root of 1685852885 is about 41059.1388730938. The cubic root of 1685852885 is about 1190.1633099789.

The spelling of 1685852885 in words is "one billion, six hundred eighty-five million, eight hundred fifty-two thousand, eight hundred eighty-five".