1218982 has 8 divisors (see below), whose sum is σ = 1887552. Its totient is φ = 589800.

The previous prime is 1218953. The next prime is 1218989. The reversal of 1218982 is 2898121.

It is a happy number.

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

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1218989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9769 + ... + 9892.

It is an arithmetic number, because the mean of its divisors is an integer number (235944).

2^1218982 is an apocalyptic number.

1218982 is a deficient number, since it is larger than the sum of its proper divisors (668570).

1218982 is a wasteful number, since it uses less digits than its factorization.

1218982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19694.

The product of its digits is 2304, while the sum is 31.

The square root of 1218982 is about 1104.0751785997. The cubic root of 1218982 is about 106.8232444368.

The spelling of 1218982 in words is "one million, two hundred eighteen thousand, nine hundred eighty-two".