9166643173 has 2 divisors, whose sum is σ = 9166643174. Its totient is φ = 9166643172.

The previous prime is 9166643159. The next prime is 9166643197. The reversal of 9166643173 is 3713466619.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6810705729 + 2355937444 = 82527^2 + 48538^2 .

It is an emirp because it is prime and its reverse (3713466619) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9166643173 - 2¹⁷ = 9166512101 is a prime.

It is a super-2 number, since 2×9166643173² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9166643573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4583321586 + 4583321587.

It is an arithmetic number, because the mean of its divisors is an integer number (4583321587).

Almost surely, 2^9166643173 is an apocalyptic number.

It is an amenable number.

9166643173 is a deficient number, since it is larger than the sum of its proper divisors (1).

9166643173 is an equidigital number, since it uses as much as digits as its factorization.

9166643173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 46.

The square root of 9166643173 is about 95742.5880838825. The cubic root of 9166643173 is about 2092.8436047888.

The spelling of 9166643173 in words is "nine billion, one hundred sixty-six million, six hundred forty-three thousand, one hundred seventy-three".