197109194 has 16 divisors (see below), whose sum is σ = 299049408. Its totient is φ = 97430112.

The previous prime is 197109193. The next prime is 197109229. The reversal of 197109194 is 491901791.

It is not an unprimeable number, because it can be changed into a prime (197109193) 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, 200027 + ... + 201009.

It is an arithmetic number, because the mean of its divisors is an integer number (18690588).

Almost surely, 2^197109194 is an apocalyptic number.

197109194 is a deficient number, since it is larger than the sum of its proper divisors (101940214).

197109194 is a wasteful number, since it uses less digits than its factorization.

197109194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2029.

The product of its (nonzero) digits is 20412, while the sum is 41.

The square root of 197109194 is about 14039.5581839316. The cubic root of 197109194 is about 581.9722730578.

The spelling of 197109194 in words is "one hundred ninety-seven million, one hundred nine thousand, one hundred ninety-four".