6181218 has 16 divisors (see below), whose sum is σ = 13736160. Its totient is φ = 2060388.

The previous prime is 6181187. The next prime is 6181223. The reversal of 6181218 is 8121816.

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

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6181191 and 6181200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57180 + ... + 57287.

It is an arithmetic number, because the mean of its divisors is an integer number (858510).

Almost surely, 2^6181218 is an apocalyptic number.

6181218 is an abundant number, since it is smaller than the sum of its proper divisors (7554942).

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

6181218 is a wasteful number, since it uses less digits than its factorization.

6181218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114478 (or 114472 counting only the distinct ones).

The product of its digits is 768, while the sum is 27.

The square root of 6181218 is about 2486.2055425889. The cubic root of 6181218 is about 183.5233607255.

The spelling of 6181218 in words is "six million, one hundred eighty-one thousand, two hundred eighteen".