188805092661 has 24 divisors (see below), whose sum is σ = 274114440600. Its totient is φ = 125226777600.

The previous prime is 188805092659. The next prime is 188805092681. The reversal of 188805092661 is 166290508881.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 73058846436 + 115746246225 = 270294^2 + 340215^2 .

It is not a de Polignac number, because 188805092661 - 2¹ = 188805092659 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 188805092598 and 188805092607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188805092621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2233791 + ... + 2316771.

It is an arithmetic number, because the mean of its divisors is an integer number (11421435025).

Almost surely, 2^188805092661 is an apocalyptic number.

It is an amenable number.

188805092661 is a deficient number, since it is larger than the sum of its proper divisors (85309347939).

188805092661 is a wasteful number, since it uses less digits than its factorization.

188805092661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84277 (or 84274 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 54.

The spelling of 188805092661 in words is "one hundred eighty-eight billion, eight hundred five million, ninety-two thousand, six hundred sixty-one".