1218963 has 8 divisors (see below), whose sum is σ = 1652176. Its totient is φ = 799200.

The previous prime is 1218953. The next prime is 1218989. The reversal of 1218963 is 3698121.

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

It is not a de Polignac number, because 1218963 - 2¹² = 1214867 is a prime.

It is an alternating number because its digits alternate between odd and even.

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 1218963.

It is not an unprimeable number, because it can be changed into a prime (1218913) 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, 3148 + ... + 3513.

It is an arithmetic number, because the mean of its divisors is an integer number (206522).

2^1218963 is an apocalyptic number.

1218963 is a deficient number, since it is larger than the sum of its proper divisors (433213).

1218963 is an equidigital number, since it uses as much as digits as its factorization.

1218963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6725.

The product of its digits is 2592, while the sum is 30.

The square root of 1218963 is about 1104.0665740797. The cubic root of 1218963 is about 106.8226894239.

The spelling of 1218963 in words is "one million, two hundred eighteen thousand, nine hundred sixty-three".