19831956208 has 20 divisors (see below), whose sum is σ = 38435798880. Its totient is φ = 9913040384.

The previous prime is 19831956191. The next prime is 19831956227. The reversal of 19831956208 is 80265913891.

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, 127393 + ... + 236416.

It is an arithmetic number, because the mean of its divisors is an integer number (1921789944).

Almost surely, 2^19831956208 is an apocalyptic number.

It is an amenable number.

19831956208 is a deficient number, since it is larger than the sum of its proper divisors (18603842672).

19831956208 is a wasteful number, since it uses less digits than its factorization.

19831956208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367224 (or 367218 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 52.

The spelling of 19831956208 in words is "nineteen billion, eight hundred thirty-one million, nine hundred fifty-six thousand, two hundred eight".