188239134541 has 4 divisors (see below), whose sum is σ = 188297797500. Its totient is φ = 188180471584.

The previous prime is 188239134467. The next prime is 188239134569. The reversal of 188239134541 is 145431932881.

It is a happy number.

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 52553728516 + 135685406025 = 229246^2 + 368355^2 .

It is a cyclic number.

It is not a de Polignac number, because 188239134541 - 2¹⁵ = 188239101773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188239134581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29326666 + ... + 29333083.

It is an arithmetic number, because the mean of its divisors is an integer number (47074449375).

Almost surely, 2^188239134541 is an apocalyptic number.

It is an amenable number.

188239134541 is a deficient number, since it is larger than the sum of its proper divisors (58662959).

188239134541 is an equidigital number, since it uses as much as digits as its factorization.

188239134541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58662958.

The product of its digits is 829440, while the sum is 49.

The spelling of 188239134541 in words is "one hundred eighty-eight billion, two hundred thirty-nine million, one hundred thirty-four thousand, five hundred forty-one".