1685303828 has 18 divisors (see below), whose sum is σ = 3193602174. Its totient is φ = 777832224.

The previous prime is 1685303813. The next prime is 1685303887. The reversal of 1685303828 is 8283035861.

It can be written as a sum of positive squares in 3 ways, for example, as 3319684 + 1681984144 = 1822^2 + 41012^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1245851 + ... + 1247202.

It is an arithmetic number, because the mean of its divisors is an integer number (177422343).

Almost surely, 2^1685303828 is an apocalyptic number.

It is an amenable number.

1685303828 is a deficient number, since it is larger than the sum of its proper divisors (1508298346).

1685303828 is a wasteful number, since it uses less digits than its factorization.

1685303828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2493083 (or 2493068 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 44.

The square root of 1685303828 is about 41052.4521557483. The cubic root of 1685303828 is about 1190.0340898362.

The spelling of 1685303828 in words is "one billion, six hundred eighty-five million, three hundred three thousand, eight hundred twenty-eight".