19226455688 has 192 divisors, whose sum is σ = 43298841600. Its totient is φ = 7973222400.

The previous prime is 19226455679. The next prime is 19226455709. The reversal of 19226455688 is 88655462291.

It is a happy number.

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 47 ways as a sum of consecutive naturals, for example, 61426220 + ... + 61426532.

It is an arithmetic number, because the mean of its divisors is an integer number (225514800).

Almost surely, 2^19226455688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19226455688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21649420800).

19226455688 is an abundant number, since it is smaller than the sum of its proper divisors (24072385912).

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

19226455688 is a wasteful number, since it uses less digits than its factorization.

19226455688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484 (or 469 counting only the distinct ones).

The product of its digits is 8294400, while the sum is 56.

The spelling of 19226455688 in words is "nineteen billion, two hundred twenty-six million, four hundred fifty-five thousand, six hundred eighty-eight".