1218875 has 24 divisors (see below), whose sum is σ = 1778400. Its totient is φ = 831600.

The previous prime is 1218859. The next prime is 1218901. The reversal of 1218875 is 5788121.

It is a happy number.

It is not a de Polignac number, because 1218875 - 2⁴ = 1218859 is a prime.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 6026 + ... + 6224.

It is an arithmetic number, because the mean of its divisors is an integer number (74100).

2^1218875 is an apocalyptic number.

1218875 is a deficient number, since it is larger than the sum of its proper divisors (559525).

1218875 is an equidigital number, since it uses as much as digits as its factorization.

1218875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228 (or 211 counting only the distinct ones).

The product of its digits is 4480, while the sum is 32.

The square root of 1218875 is about 1104.0267206911. The cubic root of 1218875 is about 106.8201187626.

The spelling of 1218875 in words is "one million, two hundred eighteen thousand, eight hundred seventy-five".