118171169 has 2 divisors, whose sum is σ = 118171170. Its totient is φ = 118171168.

The previous prime is 118171153. The next prime is 118171177. The reversal of 118171169 is 961171811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115240225 + 2930944 = 10735^2 + 1712^2 .

It is an emirp because it is prime and its reverse (961171811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 118171169 - 2⁴ = 118171153 is a prime.

It is a super-2 number, since 2×118171169² = 27928850365653122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (118171129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59085584 + 59085585.

It is an arithmetic number, because the mean of its divisors is an integer number (59085585).

Almost surely, 2^118171169 is an apocalyptic number.

It is an amenable number.

118171169 is a deficient number, since it is larger than the sum of its proper divisors (1).

118171169 is an equidigital number, since it uses as much as digits as its factorization.

118171169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 35.

The square root of 118171169 is about 10870.6563279316. The cubic root of 118171169 is about 490.7238627988.

The spelling of 118171169 in words is "one hundred eighteen million, one hundred seventy-one thousand, one hundred sixty-nine".