180108923 has 4 divisors (see below), whose sum is σ = 189588360. Its totient is φ = 170629488.

The previous prime is 180108919. The next prime is 180108947. The reversal of 180108923 is 329801081.

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 180108923 - 2² = 180108919 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 180108923.

It is not an unprimeable number, because it can be changed into a prime (180108913) 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, 4739690 + ... + 4739727.

It is an arithmetic number, because the mean of its divisors is an integer number (47397090).

Almost surely, 2^180108923 is an apocalyptic number.

180108923 is a deficient number, since it is larger than the sum of its proper divisors (9479437).

180108923 is an equidigital number, since it uses as much as digits as its factorization.

180108923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9479436.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 180108923 is about 13420.4665716211. The cubic root of 180108923 is about 564.7354837720.

The spelling of 180108923 in words is "one hundred eighty million, one hundred eight thousand, nine hundred twenty-three".