2118242390838 has 32 divisors (see below), whose sum is σ = 4841831602176. Its totient is φ = 605195273088.

The previous prime is 2118242390821. The next prime is 2118242390881. The reversal of 2118242390838 is 8380932428112.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 867195 + ... + 2233497.

It is an arithmetic number, because the mean of its divisors is an integer number (151307237568).

Almost surely, 2^{2118242390838} is an apocalyptic number.

2118242390838 is an abundant number, since it is smaller than the sum of its proper divisors (2723589211338).

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

2118242390838 is a wasteful number, since it uses less digits than its factorization.

2118242390838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1403228.

The product of its (nonzero) digits is 1327104, while the sum is 51.

The spelling of 2118242390838 in words is "two trillion, one hundred eighteen billion, two hundred forty-two million, three hundred ninety thousand, eight hundred thirty-eight".