180099 has 6 divisors (see below), whose sum is σ = 260156. Its totient is φ = 120060.

The previous prime is 180097. The next prime is 180137. The reversal of 180099 is 990081.

It is not a de Polignac number, because 180099 - 2¹ = 180097 is a prime.

It is a Duffinian number.

180099 is a modest number, since divided by 99 gives 18 as remainder.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (180097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9997 + ... + 10014.

2¹⁸⁰⁰⁹⁹ is an apocalyptic number.

180099 is a deficient number, since it is larger than the sum of its proper divisors (80057).

180099 is a wasteful number, since it uses less digits than its factorization.

180099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20017 (or 20014 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 180099 is about 424.3807252927. The cubic root of 180099 is about 56.4725112320.

The spelling of 180099 in words is "one hundred eighty thousand, ninety-nine".