19685713904 has 20 divisors (see below), whose sum is σ = 38150929464. Its totient is φ = 9840312768.

The previous prime is 19685713891. The next prime is 19685713937. The reversal of 19685713904 is 40931758691.

It is a super-3 number, since 3×19685713904³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94382 + ... + 219725.

Almost surely, 2^19685713904 is an apocalyptic number.

It is an amenable number.

19685713904 is a deficient number, since it is larger than the sum of its proper divisors (18465215560).

19685713904 is a wasteful number, since it uses less digits than its factorization.

19685713904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318032 (or 318026 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 53.

The spelling of 19685713904 in words is "nineteen billion, six hundred eighty-five million, seven hundred thirteen thousand, nine hundred four".