167842328209 has 2 divisors, whose sum is σ = 167842328210. Its totient is φ = 167842328208.

The previous prime is 167842328177. The next prime is 167842328263. The reversal of 167842328209 is 902823248761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140847838209 + 26994490000 = 375297^2 + 164300^2 .

It is a cyclic number.

It is not a de Polignac number, because 167842328209 - 2⁵ = 167842328177 is a prime.

It is not a weakly prime, because it can be changed into another prime (167842368209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83921164104 + 83921164105.

It is an arithmetic number, because the mean of its divisors is an integer number (83921164105).

Almost surely, 2^167842328209 is an apocalyptic number.

It is an amenable number.

167842328209 is a deficient number, since it is larger than the sum of its proper divisors (1).

167842328209 is an equidigital number, since it uses as much as digits as its factorization.

167842328209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2322432, while the sum is 52.

The spelling of 167842328209 in words is "one hundred sixty-seven billion, eight hundred forty-two million, three hundred twenty-eight thousand, two hundred nine".