19492678872 has 48 divisors (see below), whose sum is σ = 54080306280. Its totient is φ = 6339081600.

The previous prime is 19492678867. The next prime is 19492678901. The reversal of 19492678872 is 27887629491.

19492678872 is a `hidden beast` number, since 1 + 9 + 492 + 6 + 78 + 8 + 72 = 666.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 3298654 + ... + 3304557.

Almost surely, 2^19492678872 is an apocalyptic number.

19492678872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19492678872 is an abundant number, since it is smaller than the sum of its proper divisors (34587627408).

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

19492678872 is a wasteful number, since it uses less digits than its factorization.

19492678872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6603264 (or 6603257 counting only the distinct ones).

The product of its digits is 24385536, while the sum is 63.

The spelling of 19492678872 in words is "nineteen billion, four hundred ninety-two million, six hundred seventy-eight thousand, eight hundred seventy-two".