164171473 has 2 divisors, whose sum is σ = 164171474. Its totient is φ = 164171472.

The previous prime is 164171459. The next prime is 164171509. The reversal of 164171473 is 374171461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109662784 + 54508689 = 10472^2 + 7383^2 .

It is an emirp because it is prime and its reverse (374171461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 164171473 - 2²¹ = 162074321 is a prime.

It is equal to p_9195208 and since 164171473 and 9195208 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (164171173) 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, 82085736 + 82085737.

It is an arithmetic number, because the mean of its divisors is an integer number (82085737).

Almost surely, 2^164171473 is an apocalyptic number.

It is an amenable number.

164171473 is a deficient number, since it is larger than the sum of its proper divisors (1).

164171473 is an equidigital number, since it uses as much as digits as its factorization.

164171473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14112, while the sum is 34.

The square root of 164171473 is about 12812.9416216574. The cubic root of 164171473 is about 547.5610718416.

The spelling of 164171473 in words is "one hundred sixty-four million, one hundred seventy-one thousand, four hundred seventy-three".