2018081218 has 8 divisors (see below), whose sum is σ = 3029038848. Its totient is φ = 1008401604.

The previous prime is 2018081189. The next prime is 2018081227. The reversal of 2018081218 is 8121808102.

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 2018081218.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 315546 + ... + 321877.

It is an arithmetic number, because the mean of its divisors is an integer number (378629856).

Almost surely, 2^2018081218 is an apocalyptic number.

2018081218 is a deficient number, since it is larger than the sum of its proper divisors (1010957630).

2018081218 is a wasteful number, since it uses less digits than its factorization.

2018081218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639008.

The product of its (nonzero) digits is 2048, while the sum is 31.

The square root of 2018081218 is about 44923.0588673568. The cubic root of 2018081218 is about 1263.7064830306.

The spelling of 2018081218 in words is "two billion, eighteen million, eighty-one thousand, two hundred eighteen".