180823916 has 108 divisors (see below), whose sum is σ = 410063472. Its totient is φ = 69503616.

The previous prime is 180823913. The next prime is 180823933. The reversal of 180823916 is 619328081.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 180823916.

It is not an unprimeable number, because it can be changed into a prime (180823913) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1755521 + ... + 1755623.

It is an arithmetic number, because the mean of its divisors is an integer number (3796884).

Almost surely, 2^180823916 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 180823916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205031736).

180823916 is an abundant number, since it is smaller than the sum of its proper divisors (229239556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

180823916 is a wasteful number, since it uses less digits than its factorization.

180823916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200 (or 178 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 180823916 is about 13447.0783443840. The cubic root of 180823916 is about 565.4817891700.

The spelling of 180823916 in words is "one hundred eighty million, eight hundred twenty-three thousand, nine hundred sixteen".