197742118 has 16 divisors (see below), whose sum is σ = 349922304. Its totient is φ = 82012680.

The previous prime is 197742091. The next prime is 197742119. The reversal of 197742118 is 811247791.

197742118 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×197742118² = 78203890462251848, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197742119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227380 + ... + 228247.

It is an arithmetic number, because the mean of its divisors is an integer number (21870144).

Almost surely, 2^197742118 is an apocalyptic number.

197742118 is a deficient number, since it is larger than the sum of its proper divisors (152180186).

197742118 is a wasteful number, since it uses less digits than its factorization.

197742118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455667.

The product of its digits is 28224, while the sum is 40.

The square root of 197742118 is about 14062.0808559758. The cubic root of 197742118 is about 582.5945181161.

The spelling of 197742118 in words is "one hundred ninety-seven million, seven hundred forty-two thousand, one hundred eighteen".