189243814105 has 8 divisors (see below), whose sum is σ = 240450963912. Its totient is φ = 142489459968.

The previous prime is 189243814093. The next prime is 189243814153. The reversal of 189243814105 is 501418342981.

It can be written as a sum of positive squares in 4 ways, for example, as 7218711369 + 182025102736 = 84963^2 + 426644^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 189243814105 - 2⁵ = 189243814073 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1113198822 + ... + 1113198991.

It is an arithmetic number, because the mean of its divisors is an integer number (30056370489).

Almost surely, 2^189243814105 is an apocalyptic number.

It is an amenable number.

189243814105 is a deficient number, since it is larger than the sum of its proper divisors (51207149807).

189243814105 is a wasteful number, since it uses less digits than its factorization.

189243814105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2226397835.

The product of its (nonzero) digits is 276480, while the sum is 46.

The spelling of 189243814105 in words is "one hundred eighty-nine billion, two hundred forty-three million, eight hundred fourteen thousand, one hundred five".