19208814436 has 12 divisors (see below), whose sum is σ = 38417628928. Its totient is φ = 8232349032.

The previous prime is 19208814409. The next prime is 19208814451. The reversal of 19208814436 is 63441880291.

19208814436 is an admirable 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, 343014516 + ... + 343014571.

Almost surely, 2^19208814436 is an apocalyptic number.

It is an amenable number.

19208814436 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

19208814436 is a wasteful number, since it uses less digits than its factorization.

19208814436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686029098 (or 686029096 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 46.

The spelling of 19208814436 in words is "nineteen billion, two hundred eight million, eight hundred fourteen thousand, four hundred thirty-six".