19992294968 has 32 divisors (see below), whose sum is σ = 39287756160. Its totient is φ = 9519391200.

The previous prime is 19992294941. The next prime is 19992294983. The reversal of 19992294968 is 86949229991.

It is a junction number, because it is equal to n+sod(n) for n = 19992294898 and 19992294907.

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, 197558 + ... + 281093.

It is an arithmetic number, because the mean of its divisors is an integer number (1227742380).

Almost surely, 2^19992294968 is an apocalyptic number.

It is an amenable number.

19992294968 is a deficient number, since it is larger than the sum of its proper divisors (19295461192).

19992294968 is a wasteful number, since it uses less digits than its factorization.

19992294968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478907 (or 478903 counting only the distinct ones).

The product of its digits is 45349632, while the sum is 68.

The spelling of 19992294968 in words is "nineteen billion, nine hundred ninety-two million, two hundred ninety-four thousand, nine hundred sixty-eight".