180396789 has 12 divisors (see below), whose sum is σ = 245164416. Its totient is φ = 117989872.

The previous prime is 180396701. The next prime is 180396823. The reversal of 180396789 is 987693081.

It is not a de Polignac number, because 180396789 - 2⁹ = 180396277 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180396589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2277 + ... + 19130.

It is an arithmetic number, because the mean of its divisors is an integer number (20430368).

Almost surely, 2^180396789 is an apocalyptic number.

It is an amenable number.

180396789 is a deficient number, since it is larger than the sum of its proper divisors (64767627).

180396789 is an equidigital number, since it uses as much as digits as its factorization.

180396789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21516 (or 21463 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 51.

The square root of 180396789 is about 13431.1871776102. The cubic root of 180396789 is about 565.0361936769.

The spelling of 180396789 in words is "one hundred eighty million, three hundred ninety-six thousand, seven hundred eighty-nine".