197172164 has 12 divisors (see below), whose sum is σ = 394344384. Its totient is φ = 84502344.

The previous prime is 197172163. The next prime is 197172187. The reversal of 197172164 is 461271791.

197172164 is an admirable number.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (197172163) 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 in 3 ways as a sum of consecutive naturals, for example, 3520904 + ... + 3520959.

It is an arithmetic number, because the mean of its divisors is an integer number (32862032).

Almost surely, 2^197172164 is an apocalyptic number.

197172164 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

197172164 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

197172164 is a wasteful number, since it uses less digits than its factorization.

197172164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7041874 (or 7041872 counting only the distinct ones).

The product of its digits is 21168, while the sum is 38.

The square root of 197172164 is about 14041.8005967896. The cubic root of 197172164 is about 582.0342402201.

The spelling of 197172164 in words is "one hundred ninety-seven million, one hundred seventy-two thousand, one hundred sixty-four".