197608189 has 4 divisors (see below), whose sum is σ = 208008640. Its totient is φ = 187207740.

The previous prime is 197608183. The next prime is 197608193. The reversal of 197608189 is 981806791.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 197608189 - 2³ = 197608181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197608181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5200197 + ... + 5200234.

It is an arithmetic number, because the mean of its divisors is an integer number (52002160).

Almost surely, 2^197608189 is an apocalyptic number.

197608189 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

197608189 is a deficient number, since it is larger than the sum of its proper divisors (10400451).

197608189 is a wasteful number, since it uses less digits than its factorization.

197608189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10400450.

The product of its (nonzero) digits is 217728, while the sum is 49.

The square root of 197608189 is about 14057.3179874399. The cubic root of 197608189 is about 582.4629596935.

The spelling of 197608189 in words is "one hundred ninety-seven million, six hundred eight thousand, one hundred eighty-nine".