1685366868 has 12 divisors (see below), whose sum is σ = 3932522720. Its totient is φ = 561788952.

The previous prime is 1685366833. The next prime is 1685366911. The reversal of 1685366868 is 8686635861.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1685366868² = 5680922959504258848, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70223608 + ... + 70223631.

Almost surely, 2^1685366868 is an apocalyptic number.

It is an amenable number.

1685366868 is an abundant number, since it is smaller than the sum of its proper divisors (2247155852).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1685366868 is a wasteful number, since it uses less digits than its factorization.

1685366868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140447246 (or 140447244 counting only the distinct ones).

The product of its digits is 9953280, while the sum is 57.

The square root of 1685366868 is about 41053.2199467959. The cubic root of 1685366868 is about 1190.0489276778.

The spelling of 1685366868 in words is "one billion, six hundred eighty-five million, three hundred sixty-six thousand, eight hundred sixty-eight".