2118335436 has 96 divisors (see below), whose sum is σ = 6285440000. Its totient is φ = 604381824.

The previous prime is 2118335407. The next prime is 2118335437. The reversal of 2118335436 is 6345338112.

2118335436 is a `hidden beast` number, since 211 + 8 + 3 + 3 + 5 + 436 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 2118335436.

It is not an unprimeable number, because it can be changed into a prime (2118335437) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 693240 + ... + 696288.

Almost surely, 2^2118335436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2118335436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3142720000).

2118335436 is an abundant number, since it is smaller than the sum of its proper divisors (4167104564).

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

2118335436 is a wasteful number, since it uses less digits than its factorization.

2118335436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3988 (or 3980 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 2118335436 is about 46025.3781733513. The cubic root of 2118335436 is about 1284.2953508709.

The spelling of 2118335436 in words is "two billion, one hundred eighteen million, three hundred thirty-five thousand, four hundred thirty-six".