2120854518 has 48 divisors (see below), whose sum is σ = 5047361280. Its totient is φ = 640621872.

The previous prime is 2120854513. The next prime is 2120854531. The reversal of 2120854518 is 8154580212.

2120854518 is a `hidden beast` number, since 2 + 120 + 85 + 451 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120854511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 126946 + ... + 142677.

It is an arithmetic number, because the mean of its divisors is an integer number (105153360).

Almost surely, 2^2120854518 is an apocalyptic number.

2120854518 is an abundant number, since it is smaller than the sum of its proper divisors (2926506762).

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

2120854518 is a wasteful number, since it uses less digits than its factorization.

2120854518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269673 (or 269670 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 36.

The square root of 2120854518 is about 46052.7362704975. The cubic root of 2120854518 is about 1284.8042352938.

The spelling of 2120854518 in words is "two billion, one hundred twenty million, eight hundred fifty-four thousand, five hundred eighteen".