1982218 has 8 divisors (see below), whose sum is σ = 3398112. Its totient is φ = 849516.

The previous prime is 1982207. The next prime is 1982219. The reversal of 1982218 is 8122891.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1982218.

It is not an unprimeable number, because it can be changed into a prime (1982219) 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, 70780 + ... + 70807.

It is an arithmetic number, because the mean of its divisors is an integer number (424764).

2^1982218 is an apocalyptic number.

1982218 is a deficient number, since it is larger than the sum of its proper divisors (1415894).

1982218 is a wasteful number, since it uses less digits than its factorization.

1982218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141596.

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

The square root of 1982218 is about 1407.9126393353. The cubic root of 1982218 is about 125.6175942599.

The spelling of 1982218 in words is "one million, nine hundred eighty-two thousand, two hundred eighteen".