197089100442 has 24 divisors (see below), whose sum is σ = 459874568244. Its totient is φ = 60642800064.

The previous prime is 197089100441. The next prime is 197089100513. The reversal of 197089100442 is 244001980791.

It is a happy number.

197089100442 is a `hidden beast` number, since 197 + 0 + 8 + 9 + 10 + 0 + 442 = 666.

197089100442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 191258403561 + 5830696881 = 437331^2 + 76359^2 .

It is a super-2 number, since 2×197089100442² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (197089100441) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 421130323 + ... + 421130790.

Almost surely, 2^197089100442 is an apocalyptic number.

197089100442 is an abundant number, since it is smaller than the sum of its proper divisors (262785467802).

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

197089100442 is a wasteful number, since it uses less digits than its factorization.

197089100442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842261134 (or 842261131 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The spelling of 197089100442 in words is "one hundred ninety-seven billion, eighty-nine million, one hundred thousand, four hundred forty-two".