1818180 has 192 divisors, whose sum is σ = 7150080. Its totient is φ = 373248.

The previous prime is 1818163. The next prime is 1818199. The reversal of 1818180 is 818181.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 49122 + ... + 49158.

It is an arithmetic number, because the mean of its divisors is an integer number (37240).

2^1818180 is an apocalyptic number.

1818180 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 1818180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3575040).

1818180 is an abundant number, since it is smaller than the sum of its proper divisors (5331900).

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

1818180 is a wasteful number, since it uses less digits than its factorization.

1818180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75 (or 67 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 27.

The square root of 1818180 is about 1348.3990507265. The cubic root of 1818180 is about 122.0522037629.

Subtracting from 1818180 its reverse (818181), we obtain a palindrome (999999).

The spelling of 1818180 in words is "one million, eight hundred eighteen thousand, one hundred eighty".