1682121868 has 24 divisors (see below), whose sum is σ = 3365155584. Its totient is φ = 720714000.

The previous prime is 1682121853. The next prime is 1682121877. The reversal of 1682121868 is 8681212861.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152913 + ... + 163543.

It is an arithmetic number, because the mean of its divisors is an integer number (140214816).

Almost surely, 2^1682121868 is an apocalyptic number.

It is an amenable number.

1682121868 is an abundant number, since it is smaller than the sum of its proper divisors (1683033716).

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

1682121868 is a wasteful number, since it uses less digits than its factorization.

1682121868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16293 (or 16291 counting only the distinct ones).

The product of its digits is 73728, while the sum is 43.

The square root of 1682121868 is about 41013.6790351707. The cubic root of 1682121868 is about 1189.2846648262.

The spelling of 1682121868 in words is "one billion, six hundred eighty-two million, one hundred twenty-one thousand, eight hundred sixty-eight".