200198538 has 12 divisors (see below), whose sum is σ = 433763538. Its totient is φ = 66732840.

The previous prime is 200198533. The next prime is 200198539. The reversal of 200198538 is 835891002.

200198538 is digitally balanced in base 3, 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 only one way, i.e., 182331009 + 17867529 = 13503^2 + 4227^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (200198533) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5561053 + ... + 5561088.

Almost surely, 2^200198538 is an apocalyptic number.

200198538 is an abundant number, since it is smaller than the sum of its proper divisors (233565000).

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

200198538 is a wasteful number, since it uses less digits than its factorization.

200198538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11122149 (or 11122146 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 200198538 is about 14149.1532608846. The cubic root of 200198538 is about 584.9969931908.

The spelling of 200198538 in words is "two hundred million, one hundred ninety-eight thousand, five hundred thirty-eight".