166364117 has 2 divisors, whose sum is σ = 166364118. Its totient is φ = 166364116.

The previous prime is 166364113. The next prime is 166364123. The reversal of 166364117 is 711463661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114725521 + 51638596 = 10711^2 + 7186^2 .

It is an emirp because it is prime and its reverse (711463661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166364117 - 2² = 166364113 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166364111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83182058 + 83182059.

It is an arithmetic number, because the mean of its divisors is an integer number (83182059).

Almost surely, 2^166364117 is an apocalyptic number.

It is an amenable number.

166364117 is a deficient number, since it is larger than the sum of its proper divisors (1).

166364117 is an equidigital number, since it uses as much as digits as its factorization.

166364117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 35.

The square root of 166364117 is about 12898.2214665434. The cubic root of 166364117 is about 549.9880074520.

The spelling of 166364117 in words is "one hundred sixty-six million, three hundred sixty-four thousand, one hundred seventeen".