19738049508 has 36 divisors (see below), whose sum is σ = 50739059280. Its totient is φ = 6467834736.

The previous prime is 19738049497. The next prime is 19738049521. The reversal of 19738049508 is 80594083791.

19738049508 is a `hidden beast` number, since 1 + 9 + 73 + 80 + 495 + 0 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4644310 + ... + 4648557.

Almost surely, 2^19738049508 is an apocalyptic number.

19738049508 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

19738049508 is an abundant number, since it is smaller than the sum of its proper divisors (31001009772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19738049508 is a wasteful number, since it uses less digits than its factorization.

19738049508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9292936 (or 9292931 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The spelling of 19738049508 in words is "nineteen billion, seven hundred thirty-eight million, forty-nine thousand, five hundred eight".