1218873 has 8 divisors (see below), whose sum is σ = 1630336. Its totient is φ = 810000.

The previous prime is 1218859. The next prime is 1218901. The reversal of 1218873 is 3788121.

It is a happy number.

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

It is not a de Polignac number, because 1218873 - 2⁸ = 1218617 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1218873.

It is not an unprimeable number, because it can be changed into a prime (1218853) 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, 1248 + ... + 1998.

It is an arithmetic number, because the mean of its divisors is an integer number (203792).

2^1218873 is an apocalyptic number.

It is an amenable number.

1218873 is a deficient number, since it is larger than the sum of its proper divisors (411463).

1218873 is an equidigital number, since it uses as much as digits as its factorization.

1218873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1295.

The product of its digits is 2688, while the sum is 30.

The square root of 1218873 is about 1104.0258149156. The cubic root of 1218873 is about 106.8200603371.

The spelling of 1218873 in words is "one million, two hundred eighteen thousand, eight hundred seventy-three".