197944908100 has 27 divisors (see below), whose sum is σ = 429550105341. Its totient is φ = 79176183600.

The previous prime is 197944908053. The next prime is 197944908131. The reversal of 197944908100 is 1809449791.

The square root of 197944908100 is 444910.

It is a perfect power (a square), and thus also a powerful number.

197944908100 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 71260166916 + 126684741184 = 266946^2 + 355928^2 .

It is a super-2 number, since 2×197944908100² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4426855 + ... + 4471345.

Almost surely, 2^197944908100 is an apocalyptic number.

197944908100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

197944908100 is the 444910-th square number.

It is an amenable number.

197944908100 is an abundant number, since it is smaller than the sum of its proper divisors (231605197241).

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

197944908100 is an frugal number, since it uses more digits than its factorization.

197944908100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88996 (or 44498 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 52.

The spelling of 197944908100 in words is "one hundred ninety-seven billion, nine hundred forty-four million, nine hundred eight thousand, one hundred".