189521214 has 8 divisors (see below), whose sum is σ = 379042440. Its totient is φ = 63173736.

The previous prime is 189521203. The next prime is 189521221. The reversal of 189521214 is 412125981.

It is a sphenic number, since it is the product of 3 distinct primes.

189521214 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15793429 + ... + 15793440.

It is an arithmetic number, because the mean of its divisors is an integer number (47380305).

Almost surely, 2^189521214 is an apocalyptic number.

189521214 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

189521214 is a wasteful number, since it uses less digits than its factorization.

189521214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31586874.

The product of its digits is 5760, while the sum is 33.

The square root of 189521214 is about 13766.6704035507. The cubic root of 189521214 is about 574.4064084727.

The spelling of 189521214 in words is "one hundred eighty-nine million, five hundred twenty-one thousand, two hundred fourteen".