2116869728 has 12 divisors (see below), whose sum is σ = 4167587340. Its totient is φ = 1058434848.

The previous prime is 2116869721. The next prime is 2116869749. The reversal of 2116869728 is 8279686112.

It is a super-3 number, since 3×2116869728³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2116869721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33076058 + ... + 33076121.

It is an arithmetic number, because the mean of its divisors is an integer number (347298945).

Almost surely, 2^2116869728 is an apocalyptic number.

It is an amenable number.

2116869728 is a deficient number, since it is larger than the sum of its proper divisors (2050717612).

2116869728 is an equidigital number, since it uses as much as digits as its factorization.

2116869728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66152189 (or 66152181 counting only the distinct ones).

The product of its digits is 580608, while the sum is 50.

The square root of 2116869728 is about 46009.4525940051. The cubic root of 2116869728 is about 1283.9990748013. Note that the first 3 decimals are identical.

The spelling of 2116869728 in words is "two billion, one hundred sixteen million, eight hundred sixty-nine thousand, seven hundred twenty-eight".