1681092868 has 48 divisors (see below), whose sum is σ = 3811400320. Its totient is φ = 630042624.

The previous prime is 1681092863. The next prime is 1681092911. The reversal of 1681092868 is 8682901861.

It is not an unprimeable number, because it can be changed into a prime (1681092863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114621 + ... + 128452.

Almost surely, 2^1681092868 is an apocalyptic number.

It is an amenable number.

1681092868 is an abundant number, since it is smaller than the sum of its proper divisors (2130307452).

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

1681092868 is a wasteful number, since it uses less digits than its factorization.

1681092868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243116 (or 243114 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 49.

The square root of 1681092868 is about 41001.1325209439. The cubic root of 1681092868 is about 1189.0421093636.

The spelling of 1681092868 in words is "one billion, six hundred eighty-one million, ninety-two thousand, eight hundred sixty-eight".