118220173 has 2 divisors, whose sum is σ = 118220174. Its totient is φ = 118220172.

The previous prime is 118220171. The next prime is 118220189. The reversal of 118220173 is 371022811.

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., 103489929 + 14730244 = 10173^2 + 3838^2 .

It is a cyclic number.

It is not a de Polignac number, because 118220173 - 2¹ = 118220171 is a prime.

Together with 118220171, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118220171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59110086 + 59110087.

It is an arithmetic number, because the mean of its divisors is an integer number (59110087).

Almost surely, 2^118220173 is an apocalyptic number.

It is an amenable number.

118220173 is a deficient number, since it is larger than the sum of its proper divisors (1).

118220173 is an equidigital number, since it uses as much as digits as its factorization.

118220173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 118220173 is about 10872.9100520514. The cubic root of 118220173 is about 490.7916856276.

Adding to 118220173 its reverse (371022811), we get a palindrome (489242984).

The spelling of 118220173 in words is "one hundred eighteen million, two hundred twenty thousand, one hundred seventy-three".