18982118 has 8 divisors (see below), whose sum is σ = 28678440. Its totient is φ = 9422640.

The previous prime is 18982091. The next prime is 18982127. The reversal of 18982118 is 81128981.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33863 + ... + 34418.

It is an arithmetic number, because the mean of its divisors is an integer number (3584805).

Almost surely, 2^18982118 is an apocalyptic number.

18982118 is a deficient number, since it is larger than the sum of its proper divisors (9696322).

18982118 is a wasteful number, since it uses less digits than its factorization.

18982118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68422.

The product of its digits is 9216, while the sum is 38.

The square root of 18982118 is about 4356.8472546097. The cubic root of 18982118 is about 266.7564256868.

The spelling of 18982118 in words is "eighteen million, nine hundred eighty-two thousand, one hundred eighteen".