173165149 has 2 divisors, whose sum is σ = 173165150. Its totient is φ = 173165148.

The previous prime is 173165131. The next prime is 173165189. The reversal of 173165149 is 941561371.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128368900 + 44796249 = 11330^2 + 6693^2 .

It is a cyclic number.

It is not a de Polignac number, because 173165149 - 2⁹ = 173164637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (173165129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86582574 + 86582575.

It is an arithmetic number, because the mean of its divisors is an integer number (86582575).

Almost surely, 2^173165149 is an apocalyptic number.

It is an amenable number.

173165149 is a deficient number, since it is larger than the sum of its proper divisors (1).

173165149 is an equidigital number, since it uses as much as digits as its factorization.

173165149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 37.

The square root of 173165149 is about 13159.2229633820. Note that the first 3 decimals coincide. The cubic root of 173165149 is about 557.3827153789.

The spelling of 173165149 in words is "one hundred seventy-three million, one hundred sixty-five thousand, one hundred forty-nine".