1836180 has 54 divisors (see below), whose sum is σ = 5625438. Its totient is φ = 484800.

The previous prime is 1836157. The next prime is 1836239. The reversal of 1836180 is 816381.

It can be written as a sum of positive squares in 3 ways, for example, as 1140624 + 695556 = 1068^2 + 834^2 .

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 18130 + ... + 18230.

2^1836180 is an apocalyptic number.

1836180 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 1836180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2812719).

1836180 is an abundant number, since it is smaller than the sum of its proper divisors (3789258).

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

1836180 is a wasteful number, since it uses less digits than its factorization.

1836180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 111 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 1836180 is about 1355.0571943649. The cubic root of 1836180 is about 122.4536545494.

It can be divided in two parts, 1836 and 180, that added together give a triangular number (2016 = T₆₃).

The spelling of 1836180 in words is "one million, eight hundred thirty-six thousand, one hundred eighty".