189922310321 has 2 divisors, whose sum is σ = 189922310322. Its totient is φ = 189922310320.

The previous prime is 189922310297. The next prime is 189922310351. The reversal of 189922310321 is 123013229981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116827240000 + 73095070321 = 341800^2 + 270361^2 .

It is an emirp because it is prime and its reverse (123013229981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 189922310321 - 2⁶ = 189922310257 is a prime.

It is not a weakly prime, because it can be changed into another prime (189922310351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94961155160 + 94961155161.

It is an arithmetic number, because the mean of its divisors is an integer number (94961155161).

Almost surely, 2^189922310321 is an apocalyptic number.

It is an amenable number.

189922310321 is a deficient number, since it is larger than the sum of its proper divisors (1).

189922310321 is an equidigital number, since it uses as much as digits as its factorization.

189922310321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 41.

The spelling of 189922310321 in words is "one hundred eighty-nine billion, nine hundred twenty-two million, three hundred ten thousand, three hundred twenty-one".