2118506894 has 8 divisors (see below), whose sum is σ = 3631726128. Its totient is φ = 907931520.

The previous prime is 2118506893. The next prime is 2118506899. The reversal of 2118506894 is 4986058112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2118506893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75660947 + ... + 75660974.

It is an arithmetic number, because the mean of its divisors is an integer number (453965766).

Almost surely, 2^2118506894 is an apocalyptic number.

2118506894 is a deficient number, since it is larger than the sum of its proper divisors (1513219234).

2118506894 is a wasteful number, since it uses less digits than its factorization.

2118506894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151321930.

The product of its (nonzero) digits is 138240, while the sum is 44.

The square root of 2118506894 is about 46027.2407819543. The cubic root of 2118506894 is about 1284.3300002104.

The spelling of 2118506894 in words is "two billion, one hundred eighteen million, five hundred six thousand, eight hundred ninety-four".