19489289886 has 24 divisors (see below), whose sum is σ = 46065594744. Its totient is φ = 5905845360.

The previous prime is 19489289879. The next prime is 19489289887. The reversal of 19489289886 is 68898298491.

It is a happy number.

19489289886 is a `hidden beast` number, since 194 + 89 + 289 + 8 + 86 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19489289887) by changing a digit.

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, 49215181 + ... + 49215576.

It is an arithmetic number, because the mean of its divisors is an integer number (1919399781).

Almost surely, 2^19489289886 is an apocalyptic number.

19489289886 is an abundant number, since it is smaller than the sum of its proper divisors (26576304858).

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

19489289886 is a wasteful number, since it uses less digits than its factorization.

19489289886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98430776 (or 98430773 counting only the distinct ones).

The product of its digits is 143327232, while the sum is 72.

The spelling of 19489289886 in words is "nineteen billion, four hundred eighty-nine million, two hundred eighty-nine thousand, eight hundred eighty-six".