19868389134 has 16 divisors (see below), whose sum is σ = 43349212800. Its totient is φ = 6020723960.

The previous prime is 19868389133. The next prime is 19868389139. The reversal of 19868389134 is 43198386891.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19868389133) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 150518034 + ... + 150518165.

It is an arithmetic number, because the mean of its divisors is an integer number (2709325800).

Almost surely, 2^19868389134 is an apocalyptic number.

19868389134 is an abundant number, since it is smaller than the sum of its proper divisors (23480823666).

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

19868389134 is a wasteful number, since it uses less digits than its factorization.

19868389134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301036215.

The product of its digits is 8957952, while the sum is 60.

The spelling of 19868389134 in words is "nineteen billion, eight hundred sixty-eight million, three hundred eighty-nine thousand, one hundred thirty-four".