981218 has 16 divisors (see below), whose sum is σ = 1700160. Its totient is φ = 416016.

The previous prime is 981209. The next prime is 981221. The reversal of 981218 is 812189.

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

It is a Curzon 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, 1205 + ... + 1847.

It is an arithmetic number, because the mean of its divisors is an integer number (106260).

2⁹⁸¹²¹⁸ is an apocalyptic number.

981218 is a deficient number, since it is larger than the sum of its proper divisors (718942).

981218 is a wasteful number, since it uses less digits than its factorization.

981218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761.

The product of its digits is 1152, while the sum is 29.

The square root of 981218 is about 990.5644855334. The cubic root of 981218 is about 99.3699723206.

Subtracting from 981218 its sum of digits (29), we obtain a palindrome (981189).

The spelling of 981218 in words is "nine hundred eighty-one thousand, two hundred eighteen".