189486180 has 108 divisors (see below), whose sum is σ = 622489140. Its totient is φ = 46635264.

The previous prime is 189486163. The next prime is 189486239. The reversal of 189486180 is 81684981.

It can be written as a sum of positive squares in 6 ways, for example, as 37161216 + 152324964 = 6096^2 + 12342^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 27306 + ... + 33534.

Almost surely, 2^189486180 is an apocalyptic number.

189486180 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 189486180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (311244570).

189486180 is an abundant number, since it is smaller than the sum of its proper divisors (433002960).

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

189486180 is a wasteful number, since it uses less digits than its factorization.

189486180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6270 (or 6252 counting only the distinct ones).

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

The square root of 189486180 is about 13765.3979237798. The cubic root of 189486180 is about 574.3710122694.

The spelling of 189486180 in words is "one hundred eighty-nine million, four hundred eighty-six thousand, one hundred eighty".