188942713321 has 2 divisors, whose sum is σ = 188942713322. Its totient is φ = 188942713320.

The previous prime is 188942713307. The next prime is 188942713373. The reversal of 188942713321 is 123317249881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123068357721 + 65874355600 = 350811^2 + 256660^2 .

It is a cyclic number.

It is not a de Polignac number, because 188942713321 - 2²⁷ = 188808495593 is a prime.

It is not a weakly prime, because it can be changed into another prime (188942716321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94471356660 + 94471356661.

It is an arithmetic number, because the mean of its divisors is an integer number (94471356661).

Almost surely, 2^188942713321 is an apocalyptic number.

It is an amenable number.

188942713321 is a deficient number, since it is larger than the sum of its proper divisors (1).

188942713321 is an equidigital number, since it uses as much as digits as its factorization.

188942713321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 49.

The spelling of 188942713321 in words is "one hundred eighty-eight billion, nine hundred forty-two million, seven hundred thirteen thousand, three hundred twenty-one".