200188961 has 6 divisors (see below), whose sum is σ = 232872930. Its totient is φ = 171590496.

The previous prime is 200188927. The next prime is 200188999. The reversal of 200188961 is 169881002.

200188961 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 only one way, i.e., 157351936 + 42837025 = 12544^2 + 6545^2 .

It is not a de Polignac number, because 200188961 - 2²² = 195994657 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200188361) 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, 2042696 + ... + 2042793.

It is an arithmetic number, because the mean of its divisors is an integer number (38812155).

Almost surely, 2^200188961 is an apocalyptic number.

It is an amenable number.

200188961 is a deficient number, since it is larger than the sum of its proper divisors (32683969).

200188961 is an equidigital number, since it uses as much as digits as its factorization.

200188961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4085503 (or 4085496 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 200188961 is about 14148.8148266913. The cubic root of 200188961 is about 584.9876647751.

The spelling of 200188961 in words is "two hundred million, one hundred eighty-eight thousand, nine hundred sixty-one".