1840180 has 12 divisors (see below), whose sum is σ = 3864420. Its totient is φ = 736064.

The previous prime is 1840171. The next prime is 1840183. The reversal of 1840180 is 810481.

It can be written as a sum of positive squares in 2 ways, for example, as 712336 + 1127844 = 844^2 + 1062^2 .

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1840183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45985 + ... + 46024.

It is an arithmetic number, because the mean of its divisors is an integer number (322035).

2^1840180 is an apocalyptic number.

1840180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1840180 is an abundant number, since it is smaller than the sum of its proper divisors (2024240).

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

1840180 is a wasteful number, since it uses less digits than its factorization.

1840180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92018 (or 92016 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 22.

The square root of 1840180 is about 1356.5323438827. The cubic root of 1840180 is about 122.5425091954.

It can be divided in two parts, 18401 and 80, that added together give a palindrome (18481).

The spelling of 1840180 in words is "one million, eight hundred forty thousand, one hundred eighty".