189775939184641 has 8 divisors (see below), whose sum is σ = 200940077963304. Its totient is φ = 178611894654720.

The previous prime is 189775939184639. The next prime is 189775939184681. The reversal of 189775939184641 is 146481939577981.

It can be written as a sum of positive squares in 4 ways, for example, as 75246880854016 + 114529058330625 = 8674496^2 + 10701825^2 .

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 189775939184641 - 2¹ = 189775939184639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189775939184681) 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, 19395550 + ... + 27490711.

It is an arithmetic number, because the mean of its divisors is an integer number (25117509745413).

Almost surely, 2^{189775939184641} is an apocalyptic number.

It is an amenable number.

189775939184641 is a deficient number, since it is larger than the sum of its proper divisors (11164138778663).

189775939184641 is a wasteful number, since it uses less digits than its factorization.

189775939184641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47124371.

The product of its digits is 3292047360, while the sum is 82.

The spelling of 189775939184641 in words is "one hundred eighty-nine trillion, seven hundred seventy-five billion, nine hundred thirty-nine million, one hundred eighty-four thousand, six hundred forty-one".