197849728172 has 12 divisors (see below), whose sum is σ = 364460025720. Its totient is φ = 93718292256.

The previous prime is 197849728171. The next prime is 197849728199. The reversal of 197849728172 is 271827948791.

It is a super-3 number, since 3×197849728172³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 197849728099 and 197849728108.

It is not an unprimeable number, because it can be changed into a prime (197849728171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1301642873 + ... + 1301643024.

It is an arithmetic number, because the mean of its divisors is an integer number (30371668810).

Almost surely, 2^197849728172 is an apocalyptic number.

It is an amenable number.

197849728172 is a deficient number, since it is larger than the sum of its proper divisors (166610297548).

197849728172 is a wasteful number, since it uses less digits than its factorization.

197849728172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2603285920 (or 2603285918 counting only the distinct ones).

The product of its digits is 28449792, while the sum is 65.

The spelling of 197849728172 in words is "one hundred ninety-seven billion, eight hundred forty-nine million, seven hundred twenty-eight thousand, one hundred seventy-two".