19893886134 has 16 divisors (see below), whose sum is σ = 39832639488. Its totient is φ = 6623817512.

The previous prime is 19893886127. The next prime is 19893886139. The reversal of 19893886134 is 43168839891.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19893886139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1863702 + ... + 1874345.

It is an arithmetic number, because the mean of its divisors is an integer number (2489539968).

Almost surely, 2^19893886134 is an apocalyptic number.

19893886134 is an abundant number, since it is smaller than the sum of its proper divisors (19938753354).

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

19893886134 is a wasteful number, since it uses less digits than its factorization.

19893886134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3738939.

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

The spelling of 19893886134 in words is "nineteen billion, eight hundred ninety-three million, eight hundred eighty-six thousand, one hundred thirty-four".