180109380 has 96 divisors (see below), whose sum is σ = 567963648. Its totient is φ = 42249600.

The previous prime is 180109283. The next prime is 180109399. The reversal of 180109380 is 83901081.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16059 + ... + 24861.

It is an arithmetic number, because the mean of its divisors is an integer number (5916288).

Almost surely, 2^180109380 is an apocalyptic number.

180109380 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 180109380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283981824).

180109380 is an abundant number, since it is smaller than the sum of its proper divisors (387854268).

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

180109380 is a wasteful number, since it uses less digits than its factorization.

180109380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8857 (or 8855 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 180109380 is about 13420.4835978440. The cubic root of 180109380 is about 564.7359614161.

The spelling of 180109380 in words is "one hundred eighty million, one hundred nine thousand, three hundred eighty".