1218049 has 4 divisors (see below), whose sum is σ = 1392064. Its totient is φ = 1044036.

The previous prime is 1218043. The next prime is 1218089. The reversal of 1218049 is 9408121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9408121 = 701 ⋅13421.

It is not a de Polignac number, because 1218049 - 2⁵ = 1218017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1218043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86997 + ... + 87010.

It is an arithmetic number, because the mean of its divisors is an integer number (348016).

2^1218049 is an apocalyptic number.

It is an amenable number.

1218049 is a deficient number, since it is larger than the sum of its proper divisors (174015).

1218049 is an equidigital number, since it uses as much as digits as its factorization.

1218049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174014.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 1218049 is about 1103.6525721440. The cubic root of 1218049 is about 106.7959835678.

The spelling of 1218049 in words is "one million, two hundred eighteen thousand, forty-nine".