2118618792 has 48 divisors (see below), whose sum is σ = 5823579840. Its totient is φ = 695664288.

The previous prime is 2118618781. The next prime is 2118618793. The reversal of 2118618792 is 2978168112.

2118618792 is a `hidden beast` number, since 21 + 1 + 8 + 618 + 7 + 9 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (2118618793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 214768 + ... + 224415.

It is an arithmetic number, because the mean of its divisors is an integer number (121324580).

Almost surely, 2^2118618792 is an apocalyptic number.

It is an amenable number.

2118618792 is an abundant number, since it is smaller than the sum of its proper divisors (3704961048).

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

2118618792 is a wasteful number, since it uses less digits than its factorization.

2118618792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439262 (or 439255 counting only the distinct ones).

The product of its digits is 96768, while the sum is 45.

The square root of 2118618792 is about 46028.4563286669. The cubic root of 2118618792 is about 1284.3526122725.

The spelling of 2118618792 in words is "two billion, one hundred eighteen million, six hundred eighteen thousand, seven hundred ninety-two".