2118603812 has 12 divisors (see below), whose sum is σ = 3992753436. Its totient is φ = 977817120.

The previous prime is 2118603779. The next prime is 2118603833. The reversal of 2118603812 is 2183068112.

It can be written as a sum of positive squares in 2 ways, for example, as 855796516 + 1262807296 = 29254^2 + 35536^2 .

It is a super-2 number, since 2×2118603812² = 8976964224441862688, which contains 22 as substring.

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, 20371139 + ... + 20371242.

It is an arithmetic number, because the mean of its divisors is an integer number (332729453).

Almost surely, 2^2118603812 is an apocalyptic number.

It is an amenable number.

2118603812 is a deficient number, since it is larger than the sum of its proper divisors (1874149624).

2118603812 is a wasteful number, since it uses less digits than its factorization.

2118603812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40742398 (or 40742396 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 2118603812 is about 46028.2936029569. The cubic root of 2118603812 is about 1284.3495851985.

The spelling of 2118603812 in words is "two billion, one hundred eighteen million, six hundred three thousand, eight hundred twelve".