2118758085 has 48 divisors (see below), whose sum is σ = 3847733760. Its totient is φ = 1077183360.

The previous prime is 2118758069. The next prime is 2118758087. The reversal of 2118758085 is 5808578112.

It is not a de Polignac number, because 2118758085 - 2⁴ = 2118758069 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 2118758085.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2118758087) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 82131 + ... + 104799.

It is an arithmetic number, because the mean of its divisors is an integer number (80161120).

Almost surely, 2^2118758085 is an apocalyptic number.

It is an amenable number.

2118758085 is a deficient number, since it is larger than the sum of its proper divisors (1728975675).

2118758085 is a wasteful number, since it uses less digits than its factorization.

2118758085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22778 (or 22775 counting only the distinct ones).

The product of its (nonzero) digits is 179200, while the sum is 45.

The square root of 2118758085 is about 46029.9694221059. The cubic root of 2118758085 is about 1284.3807591338.

The spelling of 2118758085 in words is "two billion, one hundred eighteen million, seven hundred fifty-eight thousand, eighty-five".