197195808 has 48 divisors (see below), whose sum is σ = 519976800. Its totient is φ = 65435136.

The previous prime is 197195777. The next prime is 197195809. The reversal of 197195808 is 808591791.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (197195809) 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 7 ways as a sum of consecutive naturals, for example, 17268 + ... + 26316.

It is an arithmetic number, because the mean of its divisors is an integer number (10832850).

Almost surely, 2^197195808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 197195808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259988400).

197195808 is an abundant number, since it is smaller than the sum of its proper divisors (322780992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

197195808 is a wasteful number, since it uses less digits than its factorization.

197195808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9289 (or 9281 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 48.

The square root of 197195808 is about 14042.6424863699. The cubic root of 197195808 is about 582.0575042672.

It can be divided in two parts, 1971 and 95808, that added together give a palindrome (97779).

The spelling of 197195808 in words is "one hundred ninety-seven million, one hundred ninety-five thousand, eight hundred eight".