180983209 has 9 divisors (see below), whose sum is σ = 199094749. Its totient is φ = 164395660.

The previous prime is 180983197. The next prime is 180983221. The reversal of 180983209 is 902389081.

The square root of 180983209 is 13453.

It is a perfect power (a square), and thus also a powerful number.

180983209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (180983197) and next prime (180983221).

It is not a de Polignac number, because 180983209 - 2²³ = 172594601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180983609) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 147372 + ... + 148594.

Almost surely, 2^180983209 is an apocalyptic number.

180983209 is the 13453-rd square number.

180983209 is the 6727-th centered octagonal number.

It is an amenable number.

180983209 is a deficient number, since it is larger than the sum of its proper divisors (18111540).

180983209 is an frugal number, since it uses more digits than its factorization.

180983209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2468 (or 1234 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 40.

The cubic root of 180983209 is about 565.6477901707.

It can be divided in two parts, 180 and 983209, that added together give a palindrome (983389).

The spelling of 180983209 in words is "one hundred eighty million, nine hundred eighty-three thousand, two hundred nine".