189817223 has 12 divisors (see below), whose sum is σ = 202288440. Its totient is φ = 178077312.

The previous prime is 189817217. The next prime is 189817253. The reversal of 189817223 is 322718981.

It is not a de Polignac number, because 189817223 - 2⁴ = 189817207 is a prime.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189817253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 108665 + ... + 110397.

It is an arithmetic number, because the mean of its divisors is an integer number (16857370).

Almost surely, 2^189817223 is an apocalyptic number.

189817223 is a deficient number, since it is larger than the sum of its proper divisors (12471217).

189817223 is a wasteful number, since it uses less digits than its factorization.

189817223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2146 (or 2129 counting only the distinct ones).

The product of its digits is 48384, while the sum is 41.

The square root of 189817223 is about 13777.4171382012. The cubic root of 189817223 is about 574.7053038100.

The spelling of 189817223 in words is "one hundred eighty-nine million, eight hundred seventeen thousand, two hundred twenty-three".