19478996829 has 32 divisors (see below), whose sum is σ = 29447264000. Its totient is φ = 12723091200.

The previous prime is 19478996819. The next prime is 19478996843. The reversal of 19478996829 is 92869987491.

19478996829 is a `hidden beast` number, since 1 + 9 + 478 + 99 + 68 + 2 + 9 = 666.

It is not a de Polignac number, because 19478996829 - 2⁴ = 19478996813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19478996809) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 264897 + ... + 330345.

It is an arithmetic number, because the mean of its divisors is an integer number (920227000).

Almost surely, 2^19478996829 is an apocalyptic number.

It is an amenable number.

19478996829 is a deficient number, since it is larger than the sum of its proper divisors (9968267171).

19478996829 is a wasteful number, since it uses less digits than its factorization.

19478996829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65682 (or 65676 counting only the distinct ones).

The product of its digits is 141087744, while the sum is 72.

The spelling of 19478996829 in words is "nineteen billion, four hundred seventy-eight million, nine hundred ninety-six thousand, eight hundred twenty-nine".