197164188 has 108 divisors (see below), whose sum is σ = 563537520. Its totient is φ = 57987072.

The previous prime is 197164141. The next prime is 197164189. The reversal of 197164188 is 881461791.

It is a happy number.

197164188 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197164189) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 139228 + ... + 140636.

It is an arithmetic number, because the mean of its divisors is an integer number (5217940).

Almost surely, 2^197164188 is an apocalyptic number.

197164188 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 197164188, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281768760).

197164188 is an abundant number, since it is smaller than the sum of its proper divisors (366373332).

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

197164188 is a wasteful number, since it uses less digits than its factorization.

197164188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1468 (or 1450 counting only the distinct ones).

The product of its digits is 96768, while the sum is 45.

The square root of 197164188 is about 14041.5165847568. The cubic root of 197164188 is about 582.0263919728.

The spelling of 197164188 in words is "one hundred ninety-seven million, one hundred sixty-four thousand, one hundred eighty-eight".