1680492568 has 32 divisors (see below), whose sum is σ = 3338992800. Its totient is φ = 790175232.

The previous prime is 1680492557. The next prime is 1680492581. The reversal of 1680492568 is 8652940861.

It is a super-2 number, since 2×1680492568² = 5648110542206469248, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190021 + ... + 198667.

It is an arithmetic number, because the mean of its divisors is an integer number (104343525).

Almost surely, 2^1680492568 is an apocalyptic number.

It is an amenable number.

1680492568 is a deficient number, since it is larger than the sum of its proper divisors (1658500232).

1680492568 is a wasteful number, since it uses less digits than its factorization.

1680492568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10099 (or 10095 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 49.

The square root of 1680492568 is about 40993.8113378105. The cubic root of 1680492568 is about 1188.9005611740.

The spelling of 1680492568 in words is "one billion, six hundred eighty million, four hundred ninety-two thousand, five hundred sixty-eight".