1218411 has 12 divisors (see below), whose sum is σ = 1769560. Its totient is φ = 807840.

The previous prime is 1218401. The next prime is 1218421. The reversal of 1218411 is 1148121.

It is an interprime number because it is at equal distance from previous prime (1218401) and next prime (1218421).

It is not a de Polignac number, because 1218411 - 2⁹ = 1217899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1218401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2775 + ... + 3183.

2^1218411 is an apocalyptic number.

1218411 is a deficient number, since it is larger than the sum of its proper divisors (551149).

1218411 is a wasteful number, since it uses less digits than its factorization.

1218411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746 (or 743 counting only the distinct ones).

The product of its digits is 64, while the sum is 18.

The square root of 1218411 is about 1103.8165608470. The cubic root of 1218411 is about 106.8065623203.

The spelling of 1218411 in words is "one million, two hundred eighteen thousand, four hundred eleven".