19683916 has 24 divisors (see below), whose sum is σ = 39544736. Its totient is φ = 8398080.

The previous prime is 19683913. The next prime is 19683941. The reversal of 19683916 is 61938691.

It is not an unprimeable number, because it can be changed into a prime (19683913) by changing a digit.

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, 5290 + ... + 8206.

Almost surely, 2^19683916 is an apocalyptic number.

It is an amenable number.

19683916 is an abundant number, since it is smaller than the sum of its proper divisors (19860820).

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

19683916 is a wasteful number, since it uses less digits than its factorization.

19683916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3169 (or 3167 counting only the distinct ones).

The product of its digits is 69984, while the sum is 43.

The square root of 19683916 is about 4436.6559478959. The cubic root of 19683916 is about 270.0041883209.

The spelling of 19683916 in words is "nineteen million, six hundred eighty-three thousand, nine hundred sixteen".