197931368 has 8 divisors (see below), whose sum is σ = 371121330. Its totient is φ = 98965680.

The previous prime is 197931367. The next prime is 197931401. The reversal of 197931368 is 863139791.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 157201444 + 40729924 = 12538^2 + 6382^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (197931361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12370703 + ... + 12370718.

Almost surely, 2^197931368 is an apocalyptic number.

It is an amenable number.

197931368 is a deficient number, since it is larger than the sum of its proper divisors (173189962).

197931368 is a wasteful number, since it uses less digits than its factorization.

197931368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24741427 (or 24741423 counting only the distinct ones).

The product of its digits is 244944, while the sum is 47.

The square root of 197931368 is about 14068.8083361740. The cubic root of 197931368 is about 582.7803171063.

The spelling of 197931368 in words is "one hundred ninety-seven million, nine hundred thirty-one thousand, three hundred sixty-eight".