9164092181 has 2 divisors, whose sum is σ = 9164092182. Its totient is φ = 9164092180.

The previous prime is 9164092177. The next prime is 9164092211. The reversal of 9164092181 is 1812904619.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7597911556 + 1566180625 = 87166^2 + 39575^2 .

It is an emirp because it is prime and its reverse (1812904619) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9164092181 - 2² = 9164092177 is a prime.

It is a super-2 number, since 2×9164092181² (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 (9164092151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4582046090 + 4582046091.

It is an arithmetic number, because the mean of its divisors is an integer number (4582046091).

Almost surely, 2^9164092181 is an apocalyptic number.

It is an amenable number.

9164092181 is a deficient number, since it is larger than the sum of its proper divisors (1).

9164092181 is an equidigital number, since it uses as much as digits as its factorization.

9164092181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 41.

The square root of 9164092181 is about 95729.2650185929. The cubic root of 9164092181 is about 2092.6494471050.

The spelling of 9164092181 in words is "nine billion, one hundred sixty-four million, ninety-two thousand, one hundred eighty-one".