2118870018 has 24 divisors (see below), whose sum is σ = 4612651056. Its totient is φ = 702941400.

The previous prime is 2118870001. The next prime is 2118870029. The reversal of 2118870018 is 8100788112.

It is a super-2 number, since 2×2118870018² = 8979220306358640648, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 275148 + ... + 282743.

It is an arithmetic number, because the mean of its divisors is an integer number (192193794).

Almost surely, 2^2118870018 is an apocalyptic number.

2118870018 is an abundant number, since it is smaller than the sum of its proper divisors (2493781038).

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

2118870018 is a wasteful number, since it uses less digits than its factorization.

2118870018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558110 (or 558107 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 36.

The square root of 2118870018 is about 46031.1852769402. The cubic root of 2118870018 is about 1284.4033764807.

The spelling of 2118870018 in words is "two billion, one hundred eighteen million, eight hundred seventy thousand, eighteen".