197831889 has 24 divisors (see below), whose sum is σ = 298523680. Its totient is φ = 130916736.

The previous prime is 197831867. The next prime is 197831903. The reversal of 197831889 is 988138791.

It is not a de Polignac number, because 197831889 - 2¹³ = 197823697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197831989) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30849 + ... + 36705.

Almost surely, 2^197831889 is an apocalyptic number.

It is an amenable number.

197831889 is a deficient number, since it is larger than the sum of its proper divisors (100691791).

197831889 is an equidigital number, since it uses as much as digits as its factorization.

197831889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6011 (or 5999 counting only the distinct ones).

The product of its digits is 870912, while the sum is 54.

The square root of 197831889 is about 14065.2724467036. The cubic root of 197831889 is about 582.6826668973.

The spelling of 197831889 in words is "one hundred ninety-seven million, eight hundred thirty-one thousand, eight hundred eighty-nine".