1218085 has 8 divisors (see below), whose sum is σ = 1594656. Its totient is φ = 885840.

The previous prime is 1218043. The next prime is 1218089. The reversal of 1218085 is 5808121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1218085 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1218089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11019 + ... + 11128.

It is an arithmetic number, because the mean of its divisors is an integer number (199332).

2^1218085 is an apocalyptic number.

It is an amenable number.

1218085 is a deficient number, since it is larger than the sum of its proper divisors (376571).

1218085 is a wasteful number, since it uses less digits than its factorization.

1218085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22163.

The product of its (nonzero) digits is 640, while the sum is 25.

The square root of 1218085 is about 1103.6688815039. The cubic root of 1218085 is about 106.7970356923.

The spelling of 1218085 in words is "one million, two hundred eighteen thousand, eighty-five".