197118 has 24 divisors (see below), whose sum is σ = 438048. Its totient is φ = 64032.

The previous prime is 197117. The next prime is 197123. The reversal of 197118 is 811791.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 197091 and 197100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197117) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 730 + ... + 962.

It is an arithmetic number, because the mean of its divisors is an integer number (18252).

2¹⁹⁷¹¹⁸ is an apocalyptic number.

197118 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

197118 is an abundant number, since it is smaller than the sum of its proper divisors (240930).

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

197118 is a wasteful number, since it uses less digits than its factorization.

197118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288 (or 285 counting only the distinct ones).

The product of its digits is 504, while the sum is 27.

The square root of 197118 is about 443.9797292670. The cubic root of 197118 is about 58.1980939610.

The spelling of 197118 in words is "one hundred ninety-seven thousand, one hundred eighteen".