189220230165 has 16 divisors (see below), whose sum is σ = 310136573376. Its totient is φ = 98456054400.

The previous prime is 189220230163. The next prime is 189220230181. The reversal of 189220230165 is 561032022981.

It is not a de Polignac number, because 189220230165 - 2¹ = 189220230163 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189220230163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153836971 + ... + 153838200.

It is an arithmetic number, because the mean of its divisors is an integer number (19383535836).

Almost surely, 2^189220230165 is an apocalyptic number.

189220230165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

189220230165 is a deficient number, since it is larger than the sum of its proper divisors (120916343211).

189220230165 is a wasteful number, since it uses less digits than its factorization.

189220230165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307675220.

The product of its (nonzero) digits is 51840, while the sum is 39.

The spelling of 189220230165 in words is "one hundred eighty-nine billion, two hundred twenty million, two hundred thirty thousand, one hundred sixty-five".