197161996 has 12 divisors (see below), whose sum is σ = 345134160. Its totient is φ = 98552240.

The previous prime is 197161973. The next prime is 197161997. The reversal of 197161996 is 699161791.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (197161997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18186 + ... + 26926.

It is an arithmetic number, because the mean of its divisors is an integer number (28761180).

Almost surely, 2^197161996 is an apocalyptic number.

It is an amenable number.

197161996 is a deficient number, since it is larger than the sum of its proper divisors (147972164).

197161996 is a wasteful number, since it uses less digits than its factorization.

197161996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14384 (or 14382 counting only the distinct ones).

The product of its digits is 183708, while the sum is 49.

The square root of 197161996 is about 14041.4385302931. The cubic root of 197161996 is about 582.0242350453.

It can be divided in two parts, 19716 and 1996, that added together give a palindrome (21712).

The spelling of 197161996 in words is "one hundred ninety-seven million, one hundred sixty-one thousand, nine hundred ninety-six".