19963376894 has 8 divisors (see below), whose sum is σ = 30143377488. Its totient is φ = 9915584400.

The previous prime is 19963376887. The next prime is 19963376921. The reversal of 19963376894 is 49867336991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 19963376894.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33051647 + ... + 33052250.

It is an arithmetic number, because the mean of its divisors is an integer number (3767922186).

Almost surely, 2^19963376894 is an apocalyptic number.

19963376894 is a deficient number, since it is larger than the sum of its proper divisors (10180000594).

19963376894 is a wasteful number, since it uses less digits than its factorization.

19963376894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66104050.

The product of its digits is 52907904, while the sum is 65.

The spelling of 19963376894 in words is "nineteen billion, nine hundred sixty-three million, three hundred seventy-six thousand, eight hundred ninety-four".