1682956820 has 36 divisors (see below), whose sum is σ = 3754345980. Its totient is φ = 633581568.

The previous prime is 1682956789. The next prime is 1682956843. The reversal of 1682956820 is 286592861.

It can be written as a sum of positive squares in 6 ways, for example, as 38167684 + 1644789136 = 6178^2 + 40556^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 139805 + ... + 151364.

Almost surely, 2^1682956820 is an apocalyptic number.

1682956820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1682956820 is an abundant number, since it is smaller than the sum of its proper divisors (2071389160).

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

1682956820 is a wasteful number, since it uses less digits than its factorization.

1682956820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291212 (or 291193 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 47.

The square root of 1682956820 is about 41023.8567177685. The cubic root of 1682956820 is about 1189.4814066867.

The spelling of 1682956820 in words is "one billion, six hundred eighty-two million, nine hundred fifty-six thousand, eight hundred twenty".