18212982 has 16 divisors (see below), whose sum is σ = 38343360. Its totient is φ = 5751432.

The previous prime is 18212981. The next prime is 18212993. The reversal of 18212982 is 28921281.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18212981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79768 + ... + 79995.

It is an arithmetic number, because the mean of its divisors is an integer number (2396460).

Almost surely, 2^18212982 is an apocalyptic number.

18212982 is an abundant number, since it is smaller than the sum of its proper divisors (20130378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18212982 is a wasteful number, since it uses less digits than its factorization.

18212982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159787.

The product of its digits is 4608, while the sum is 33.

The square root of 18212982 is about 4267.6670441823. The cubic root of 18212982 is about 263.1037387071.

The spelling of 18212982 in words is "eighteen million, two hundred twelve thousand, nine hundred eighty-two".