2116323905 has 16 divisors (see below), whose sum is σ = 2603145600. Its totient is φ = 1650824448.

The previous prime is 2116323901. The next prime is 2116323919. The reversal of 2116323905 is 5093236112.

It is a cyclic number.

It is not a de Polignac number, because 2116323905 - 2² = 2116323901 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2116323901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120569 + ... + 137001.

It is an arithmetic number, because the mean of its divisors is an integer number (162696600).

Almost surely, 2^2116323905 is an apocalyptic number.

It is an amenable number.

2116323905 is a deficient number, since it is larger than the sum of its proper divisors (486821695).

2116323905 is a wasteful number, since it uses less digits than its factorization.

2116323905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17080.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 2116323905 is about 46003.5205717997. The cubic root of 2116323905 is about 1283.8887079922. Note that the first 3 decimals are identical.

The spelling of 2116323905 in words is "two billion, one hundred sixteen million, three hundred twenty-three thousand, nine hundred five".