180929980 has 96 divisors (see below), whose sum is σ = 501645312. Its totient is φ = 53068800.

The previous prime is 180929941. The next prime is 180930011. The reversal of 180929980 is 89929081.

It is a happy number.

180929980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 180929980.

It is a congruent number.

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, 22725 + ... + 29635.

It is an arithmetic number, because the mean of its divisors is an integer number (5225472).

Almost surely, 2^180929980 is an apocalyptic number.

180929980 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 180929980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (250822656).

180929980 is an abundant number, since it is smaller than the sum of its proper divisors (320715332).

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

180929980 is a wasteful number, since it uses less digits than its factorization.

180929980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6955 (or 6953 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 46.

The square root of 180929980 is about 13451.0215225462. The cubic root of 180929980 is about 565.5923304798.

The spelling of 180929980 in words is "one hundred eighty million, nine hundred twenty-nine thousand, nine hundred eighty".