180389 has 12 divisors (see below), whose sum is σ = 212352. Its totient is φ = 151800.

The previous prime is 180379. The next prime is 180391. The reversal of 180389 is 983081.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-180389 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5804 + ... + 5834.

It is an arithmetic number, because the mean of its divisors is an integer number (17696).

2¹⁸⁰³⁸⁹ is an apocalyptic number.

It is an amenable number.

180389 is a deficient number, since it is larger than the sum of its proper divisors (31963).

180389 is a wasteful number, since it uses less digits than its factorization.

180389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88 (or 65 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 180389 is about 424.7222621902. The cubic root of 180389 is about 56.5028061362.

The spelling of 180389 in words is "one hundred eighty thousand, three hundred eighty-nine".