19683988 has 12 divisors (see below), whose sum is σ = 35097300. Its totient is φ = 9656192.

The previous prime is 19683973. The next prime is 19684001. The reversal of 19683988 is 88938691.

It can be written as a sum of positive squares in 2 ways, for example, as 10061584 + 9622404 = 3172^2 + 3102^2 .

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 46213 + ... + 46636.

It is an arithmetic number, because the mean of its divisors is an integer number (2924775).

Almost surely, 2^19683988 is an apocalyptic number.

It is an amenable number.

19683988 is a deficient number, since it is larger than the sum of its proper divisors (15413312).

19683988 is a wasteful number, since it uses less digits than its factorization.

19683988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92906 (or 92904 counting only the distinct ones).

The product of its digits is 746496, while the sum is 52.

The square root of 19683988 is about 4436.6640621079. The cubic root of 19683988 is about 270.0045175284.

The spelling of 19683988 in words is "nineteen million, six hundred eighty-three thousand, nine hundred eighty-eight".