189813101105 has 4 divisors (see below), whose sum is σ = 227775721332. Its totient is φ = 151850480880.

The previous prime is 189813101039. The next prime is 189813101117. The reversal of 189813101105 is 501101318981.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 50056007824 + 139757093281 = 223732^2 + 373841^2 .

It is not a de Polignac number, because 189813101105 - 2⁸ = 189813100849 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 18981310106 + ... + 18981310115.

It is an arithmetic number, because the mean of its divisors is an integer number (56943930333).

Almost surely, 2^189813101105 is an apocalyptic number.

It is an amenable number.

189813101105 is a deficient number, since it is larger than the sum of its proper divisors (37962620227).

189813101105 is an equidigital number, since it uses as much as digits as its factorization.

189813101105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37962620226.

The product of its (nonzero) digits is 8640, while the sum is 38.

The spelling of 189813101105 in words is "one hundred eighty-nine billion, eight hundred thirteen million, one hundred one thousand, one hundred five".