197838297 has 18 divisors (see below), whose sum is σ = 293716878. Its totient is φ = 128319552.

The previous prime is 197838293. The next prime is 197838307. The reversal of 197838297 is 792838791.

It can be written as a sum of positive squares in 3 ways, for example, as 106998336 + 90839961 = 10344^2 + 9531^2 .

It is not a de Polignac number, because 197838297 - 2² = 197838293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197838293) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4293 + ... + 20349.

Almost surely, 2^197838297 is an apocalyptic number.

It is an amenable number.

197838297 is a deficient number, since it is larger than the sum of its proper divisors (95878581).

197838297 is a wasteful number, since it uses less digits than its factorization.

197838297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16137 (or 16097 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 54.

The square root of 197838297 is about 14065.5002399488. The cubic root of 197838297 is about 582.6889580809.

It can be divided in two parts, 197838 and 297, that added together give a triangular number (198135 = T₆₂₉).

The spelling of 197838297 in words is "one hundred ninety-seven million, eight hundred thirty-eight thousand, two hundred ninety-seven".