197425914191 has 16 divisors (see below), whose sum is σ = 229046415360. Its totient is φ = 168278964480.

The previous prime is 197425914137. The next prime is 197425914271. The reversal of 197425914191 is 191419524791.

It is not a de Polignac number, because 197425914191 - 2²⁶ = 197358805327 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 (197425914391) 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, 4848911 + ... + 4889456.

It is an arithmetic number, because the mean of its divisors is an integer number (14315400960).

Almost surely, 2^197425914191 is an apocalyptic number.

197425914191 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

197425914191 is a deficient number, since it is larger than the sum of its proper divisors (31620501169).

197425914191 is a wasteful number, since it uses less digits than its factorization.

197425914191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9738494.

The product of its digits is 816480, while the sum is 53.

The spelling of 197425914191 in words is "one hundred ninety-seven billion, four hundred twenty-five million, nine hundred fourteen thousand, one hundred ninety-one".