1683421716 has 24 divisors (see below), whose sum is σ = 3928699264. Its totient is φ = 561038400.

The previous prime is 1683421643. The next prime is 1683421741. The reversal of 1683421716 is 6171243861.

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, 87141 + ... + 104691.

Almost surely, 2^1683421716 is an apocalyptic number.

It is an amenable number.

1683421716 is an abundant number, since it is smaller than the sum of its proper divisors (2245277548).

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

1683421716 is a wasteful number, since it uses less digits than its factorization.

1683421716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25551 (or 25549 counting only the distinct ones).

The product of its digits is 48384, while the sum is 39.

The square root of 1683421716 is about 41029.5224929562. The cubic root of 1683421716 is about 1189.5909231106.

The spelling of 1683421716 in words is "one billion, six hundred eighty-three million, four hundred twenty-one thousand, seven hundred sixteen".