210243189 has 32 divisors (see below), whose sum is σ = 320051200. Its totient is φ = 121694400.

The previous prime is 210243157. The next prime is 210243191. The reversal of 210243189 is 981342012.

It is not a de Polignac number, because 210243189 - 2⁵ = 210243157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210243289) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 110952 + ... + 112830.

It is an arithmetic number, because the mean of its divisors is an integer number (10001600).

Almost surely, 2^210243189 is an apocalyptic number.

It is an amenable number.

210243189 is a deficient number, since it is larger than the sum of its proper divisors (109808011).

210243189 is a wasteful number, since it uses less digits than its factorization.

210243189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2065.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 210243189 is about 14499.7651360289. The cubic root of 210243189 is about 594.6215506433.

The spelling of 210243189 in words is "two hundred ten million, two hundred forty-three thousand, one hundred eighty-nine".