197129938 has 16 divisors (see below), whose sum is σ = 306249984. Its totient is φ = 95105920.

The previous prime is 197129929. The next prime is 197129951. The reversal of 197129938 is 839921791.

It is a junction number, because it is equal to n+sod(n) for n = 197129891 and 197129900.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8095 + ... + 21442.

It is an arithmetic number, because the mean of its divisors is an integer number (19140624).

Almost surely, 2^197129938 is an apocalyptic number.

197129938 is a deficient number, since it is larger than the sum of its proper divisors (109120046).

197129938 is a wasteful number, since it uses less digits than its factorization.

197129938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29657.

The product of its digits is 244944, while the sum is 49.

The square root of 197129938 is about 14040.2969341820. The cubic root of 197129938 is about 581.9926881538.

The spelling of 197129938 in words is "one hundred ninety-seven million, one hundred twenty-nine thousand, nine hundred thirty-eight".