180923 has 4 divisors (see below), whose sum is σ = 181920. Its totient is φ = 179928.

The previous prime is 180907. The next prime is 180949. The reversal of 180923 is 329081.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 180923 - 2⁴ = 180907 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 180923.

It is not an unprimeable number, because it can be changed into a prime (180023) 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, 140 + ... + 617.

It is an arithmetic number, because the mean of its divisors is an integer number (45480).

2¹⁸⁰⁹²³ is an apocalyptic number.

180923 is a deficient number, since it is larger than the sum of its proper divisors (997).

180923 is an equidigital number, since it uses as much as digits as its factorization.

180923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 180923 is about 425.3504437520. The cubic root of 180923 is about 56.5585057159.

The spelling of 180923 in words is "one hundred eighty thousand, nine hundred twenty-three".