197942118 has 32 divisors (see below), whose sum is σ = 457280640. Its totient is φ = 56453760.

The previous prime is 197942113. The next prime is 197942131. The reversal of 197942118 is 811249791.

It is a self number, because there is not a number n which added to its sum of digits gives 197942118.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197942111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87088 + ... + 89331.

It is an arithmetic number, because the mean of its divisors is an integer number (14290020).

Almost surely, 2^197942118 is an apocalyptic number.

197942118 is an abundant number, since it is smaller than the sum of its proper divisors (259338522).

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

197942118 is a wasteful number, since it uses less digits than its factorization.

197942118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176452.

The product of its digits is 36288, while the sum is 42.

The square root of 197942118 is about 14069.1903818237. The cubic root of 197942118 is about 582.7908675226.

It can be divided in two parts, 19794 and 2118, that added together give a palindrome (21912).

The spelling of 197942118 in words is "one hundred ninety-seven million, nine hundred forty-two thousand, one hundred eighteen".