197400198100 has 72 divisors (see below), whose sum is σ = 490689093888. Its totient is φ = 67522934400.

The previous prime is 197400198091. The next prime is 197400198143. The reversal of 197400198100 is 1891004791.

197400198100 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×197400198100² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25447 + ... + 628846.

It is an arithmetic number, because the mean of its divisors is an integer number (6815126304).

Almost surely, 2^197400198100 is an apocalyptic number.

197400198100 is a gapful number since it is divisible by the number (10) 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 197400198100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245344546944).

197400198100 is an abundant number, since it is smaller than the sum of its proper divisors (293288895788).

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

197400198100 is a wasteful number, since it uses less digits than its factorization.

197400198100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654745 (or 654738 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 40.

The spelling of 197400198100 in words is "one hundred ninety-seven billion, four hundred million, one hundred ninety-eight thousand, one hundred".