180120289 has 8 divisors (see below), whose sum is σ = 181684800. Its totient is φ = 178560816.

The previous prime is 180120263. The next prime is 180120293. The reversal of 180120289 is 982021081.

It is a happy number.

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 180120289 - 2¹⁵ = 180087521 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 180120289.

It is not an unprimeable number, because it can be changed into a prime (180120229) 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, 109894 + ... + 111520.

It is an arithmetic number, because the mean of its divisors is an integer number (22710600).

Almost surely, 2^180120289 is an apocalyptic number.

It is an amenable number.

180120289 is a deficient number, since it is larger than the sum of its proper divisors (1564511).

180120289 is a wasteful number, since it uses less digits than its factorization.

180120289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2519.

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 180120289 is about 13420.8900226475. The cubic root of 180120289 is about 564.7473629696.

The spelling of 180120289 in words is "one hundred eighty million, one hundred twenty thousand, two hundred eighty-nine".