189706226108317 has 2 divisors, whose sum is σ = 189706226108318. Its totient is φ = 189706226108316.

The previous prime is 189706226108233. The next prime is 189706226108353. The reversal of 189706226108317 is 713801622607981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 155206273828761 + 34499952279556 = 12458181^2 + 5873666^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189706226108317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189706226108387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94853113054158 + 94853113054159.

It is an arithmetic number, because the mean of its divisors is an integer number (94853113054159).

Almost surely, 2^{189706226108317} is an apocalyptic number.

It is an amenable number.

189706226108317 is a deficient number, since it is larger than the sum of its proper divisors (1).

189706226108317 is an equidigital number, since it uses as much as digits as its factorization.

189706226108317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12192768, while the sum is 61.

The spelling of 189706226108317 in words is "one hundred eighty-nine trillion, seven hundred six billion, two hundred twenty-six million, one hundred eight thousand, three hundred seventeen".