189910223 has 4 divisors (see below), whose sum is σ = 190113840. Its totient is φ = 189706608.

The previous prime is 189910181. The next prime is 189910249. The reversal of 189910223 is 322019981.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 189910223 - 2¹⁴ = 189893839 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 (189910283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100403 + ... + 102276.

It is an arithmetic number, because the mean of its divisors is an integer number (47528460).

Almost surely, 2^189910223 is an apocalyptic number.

189910223 is a deficient number, since it is larger than the sum of its proper divisors (203617).

189910223 is an equidigital number, since it uses as much as digits as its factorization.

189910223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203616.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 189910223 is about 13780.7918132450. The cubic root of 189910223 is about 574.7991464831.

The spelling of 189910223 in words is "one hundred eighty-nine million, nine hundred ten thousand, two hundred twenty-three".