161250180 has 144 divisors (see below), whose sum is σ = 565750080. Its totient is φ = 34013952.

The previous prime is 161250163. The next prime is 161250191. The reversal of 161250180 is 81052161.

161250180 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 161250180.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 36111 + ... + 40329.

It is an arithmetic number, because the mean of its divisors is an integer number (3928820).

Almost surely, 2^161250180 is an apocalyptic number.

161250180 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 161250180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282875040).

161250180 is an abundant number, since it is smaller than the sum of its proper divisors (404499900).

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

161250180 is a wasteful number, since it uses less digits than its factorization.

161250180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4258 (or 4249 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 24.

The square root of 161250180 is about 12698.4321866914. The cubic root of 161250180 is about 544.2938192542.

The spelling of 161250180 in words is "one hundred sixty-one million, two hundred fifty thousand, one hundred eighty".