2116412809 has 8 divisors (see below), whose sum is σ = 2421703040. Its totient is φ = 1811858976.

The previous prime is 2116412797. The next prime is 2116412819. The reversal of 2116412809 is 9082146112.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2116412809 - 2¹⁵ = 2116380041 is a prime.

It is a super-4 number, since 4×2116412809⁴ (a number of 38 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2116412819) 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 in 7 ways as a sum of consecutive naturals, for example, 177924 + ... + 189445.

It is an arithmetic number, because the mean of its divisors is an integer number (302712880).

Almost surely, 2^2116412809 is an apocalyptic number.

It is an amenable number.

2116412809 is a deficient number, since it is larger than the sum of its proper divisors (305290231).

2116412809 is an equidigital number, since it uses as much as digits as its factorization.

2116412809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368199.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 2116412809 is about 46004.4868355251. The cubic root of 2116412809 is about 1283.9066859024.

The spelling of 2116412809 in words is "two billion, one hundred sixteen million, four hundred twelve thousand, eight hundred nine".