196866173 has 18 divisors (see below), whose sum is σ = 232569918. Its totient is φ = 166157040.

The previous prime is 196866149. The next prime is 196866179. The reversal of 196866173 is 371668691.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 166978084 + 29888089 = 12922^2 + 5467^2 .

It is not a de Polignac number, because 196866173 - 2¹² = 196862077 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196866179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 246611 + ... + 247407.

It is an arithmetic number, because the mean of its divisors is an integer number (12920551).

Almost surely, 2^196866173 is an apocalyptic number.

It is an amenable number.

196866173 is a deficient number, since it is larger than the sum of its proper divisors (35703745).

196866173 is an frugal number, since it uses more digits than its factorization.

196866173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953 (or 875 counting only the distinct ones).

The product of its digits is 326592, while the sum is 47.

The square root of 196866173 is about 14030.9006482121. The cubic root of 196866173 is about 581.7329984954.

The spelling of 196866173 in words is "one hundred ninety-six million, eight hundred sixty-six thousand, one hundred seventy-three".