180099000 has 96 divisors (see below), whose sum is σ = 608765040. Its totient is φ = 48024000.

The previous prime is 180098977. The next prime is 180099001. The reversal of 180099000 is 990081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180099001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1006 + ... + 19005.

Almost surely, 2^180099000 is an apocalyptic number.

180099000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 180099000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (304382520).

180099000 is an abundant number, since it is smaller than the sum of its proper divisors (428666040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

180099000 is a wasteful number, since it uses less digits than its factorization.

180099000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20038 (or 20021 counting only the distinct ones).

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

The square root of 180099000 is about 13420.0968699932. The cubic root of 180099000 is about 564.7251123200.

The spelling of 180099000 in words is "one hundred eighty million, ninety-nine thousand".