1218964 has 24 divisors (see below), whose sum is σ = 2303840. Its totient is φ = 562464.

The previous prime is 1218953. The next prime is 1218989. The reversal of 1218964 is 4698121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3082 + ... + 3454.

2^1218964 is an apocalyptic number.

It is an amenable number.

1218964 is a deficient number, since it is larger than the sum of its proper divisors (1084876).

1218964 is a wasteful number, since it uses less digits than its factorization.

1218964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439 (or 437 counting only the distinct ones).

The product of its digits is 3456, while the sum is 31.

The square root of 1218964 is about 1104.0670269508. The cubic root of 1218964 is about 106.8227186352.

The spelling of 1218964 in words is "one million, two hundred eighteen thousand, nine hundred sixty-four".