2118835247 has 6 divisors (see below), whose sum is σ = 2164878288. Its totient is φ = 2073751484.

The previous prime is 2118835223. The next prime is 2118835249. The reversal of 2118835247 is 7425388112.

It is not a de Polignac number, because 2118835247 - 2²² = 2114640943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2118835249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 477383 + ... + 481800.

It is an arithmetic number, because the mean of its divisors is an integer number (360813048).

Almost surely, 2^2118835247 is an apocalyptic number.

2118835247 is a deficient number, since it is larger than the sum of its proper divisors (46043041).

2118835247 is an frugal number, since it uses more digits than its factorization.

2118835247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959277 (or 959230 counting only the distinct ones).

The product of its digits is 107520, while the sum is 41.

The square root of 2118835247 is about 46030.8075857898. The cubic root of 2118835247 is about 1284.3963506865.

The spelling of 2118835247 in words is "two billion, one hundred eighteen million, eight hundred thirty-five thousand, two hundred forty-seven".