19487878200 has 864 divisors, whose sum is σ = 83109078000. Its totient is φ = 4064256000.

The previous prime is 19487878169. The next prime is 19487878211. The reversal of 19487878200 is 287878491.

It is a happy number.

19487878200 is a `hidden beast` number, since 1 + 9 + 487 + 87 + 82 + 0 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 48598000 + ... + 48598400.

Almost surely, 2^19487878200 is an apocalyptic number.

19487878200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19487878200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41554539000).

19487878200 is an abundant number, since it is smaller than the sum of its proper divisors (63621199800).

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

19487878200 is a wasteful number, since it uses less digits than its factorization.

19487878200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485 (or 466 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 54.

The spelling of 19487878200 in words is "nineteen billion, four hundred eighty-seven million, eight hundred seventy-eight thousand, two hundred".