197642870898 has 32 divisors (see below), whose sum is σ = 431258867712. Its totient is φ = 59886493200.

The previous prime is 197642870891. The next prime is 197642870933. The reversal of 197642870898 is 898078246791.

It is not an unprimeable number, because it can be changed into a prime (197642870891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 656743 + ... + 909173.

It is an arithmetic number, because the mean of its divisors is an integer number (13476839616).

Almost surely, 2^197642870898 is an apocalyptic number.

197642870898 is an abundant number, since it is smaller than the sum of its proper divisors (233615996814).

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

197642870898 is a wasteful number, since it uses less digits than its factorization.

197642870898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264310.

The product of its (nonzero) digits is 97542144, while the sum is 69.

The spelling of 197642870898 in words is "one hundred ninety-seven billion, six hundred forty-two million, eight hundred seventy thousand, eight hundred ninety-eight".