1818218112 has 64 divisors (see below), whose sum is σ = 4834922400. Its totient is φ = 605410304.

The previous prime is 1818218069. The next prime is 1818218137. The reversal of 1818218112 is 2118128181.

It is a tau number, because it is divible by the number of its divisors (64).

It is a nude number because it is divisible by every one of its digits.

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, 453814 + ... + 457802.

Almost surely, 2^1818218112 is an apocalyptic number.

1818218112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1818218112 is an abundant number, since it is smaller than the sum of its proper divisors (3016704288).

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

1818218112 is a wasteful number, since it uses less digits than its factorization.

1818218112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5193 (or 5181 counting only the distinct ones).

The product of its digits is 2048, while the sum is 33.

The square root of 1818218112 is about 42640.5688517402. The cubic root of 1818218112 is about 1220.5305656099.

The spelling of 1818218112 in words is "one billion, eight hundred eighteen million, two hundred eighteen thousand, one hundred twelve".