180938880 has 256 divisors, whose sum is σ = 660470400. Its totient is φ = 46780416.

The previous prime is 180938839. The next prime is 180938887. The reversal of 180938880 is 88839081.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (180938887) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 639219 + ... + 639501.

Almost surely, 2^180938880 is an apocalyptic number.

180938880 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 180938880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (330235200).

180938880 is an abundant number, since it is smaller than the sum of its proper divisors (479531520).

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

180938880 is a wasteful number, since it uses less digits than its factorization.

180938880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348 (or 330 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 45.

The square root of 180938880 is about 13451.3523483700. The cubic root of 180938880 is about 565.6016042133.

The spelling of 180938880 in words is "one hundred eighty million, nine hundred thirty-eight thousand, eight hundred eighty".