188766408241 has 2 divisors, whose sum is σ = 188766408242. Its totient is φ = 188766408240.

The previous prime is 188766408221. The next prime is 188766408247. The reversal of 188766408241 is 142804667881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 158029305841 + 30737102400 = 397529^2 + 175320^2 .

It is an emirp because it is prime and its reverse (142804667881) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-188766408241 is a prime.

It is not a weakly prime, because it can be changed into another prime (188766408247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94383204120 + 94383204121.

It is an arithmetic number, because the mean of its divisors is an integer number (94383204121).

Almost surely, 2^188766408241 is an apocalyptic number.

It is an amenable number.

188766408241 is a deficient number, since it is larger than the sum of its proper divisors (1).

188766408241 is an equidigital number, since it uses as much as digits as its factorization.

188766408241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4128768, while the sum is 55.

The spelling of 188766408241 in words is "one hundred eighty-eight billion, seven hundred sixty-six million, four hundred eight thousand, two hundred forty-one".