189120823 has 8 divisors (see below), whose sum is σ = 194233536. Its totient is φ = 184032000.

The previous prime is 189120797. The next prime is 189120829. The reversal of 189120823 is 328021981.

189120823 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 189120823 - 2²¹ = 187023671 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 (189120829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10690 + ... + 22192.

It is an arithmetic number, because the mean of its divisors is an integer number (24279192).

Almost surely, 2^189120823 is an apocalyptic number.

189120823 is a deficient number, since it is larger than the sum of its proper divisors (5112713).

189120823 is a wasteful number, since it uses less digits than its factorization.

189120823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11945.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 189120823 is about 13752.1206728272. The cubic root of 189120823 is about 574.0016177157.

The spelling of 189120823 in words is "one hundred eighty-nine million, one hundred twenty thousand, eight hundred twenty-three".