180149900 has 72 divisors (see below), whose sum is σ = 457741536. Its totient is φ = 60249600.

The previous prime is 180149891. The next prime is 180149903. The reversal of 180149900 is 9941081.

It is not an unprimeable number, because it can be changed into a prime (180149903) 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, 25562 + ... + 31838.

Almost surely, 2^180149900 is an apocalyptic number.

180149900 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 180149900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228870768).

180149900 is an abundant number, since it is smaller than the sum of its proper divisors (277591636).

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

180149900 is a wasteful number, since it uses less digits than its factorization.

180149900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6339 (or 6332 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 180149900 is about 13421.9931455801. The cubic root of 180149900 is about 564.7783086189.

The spelling of 180149900 in words is "one hundred eighty million, one hundred forty-nine thousand, nine hundred".