2116634213 has 6 divisors (see below), whose sum is σ = 2187116262. Its totient is φ = 2048354760.

The previous prime is 2116634209. The next prime is 2116634231. The reversal of 2116634213 is 3124366112.

It can be written as a sum of positive squares in only one way, i.e., 1987198084 + 129436129 = 44578^2 + 11377^2 .

It is not a de Polignac number, because 2116634213 - 2² = 2116634209 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 (2116634293) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1100306 + ... + 1102227.

It is an arithmetic number, because the mean of its divisors is an integer number (364519377).

Almost surely, 2^2116634213 is an apocalyptic number.

It is an amenable number.

2116634213 is a deficient number, since it is larger than the sum of its proper divisors (70482049).

2116634213 is an equidigital number, since it uses as much as digits as its factorization.

2116634213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2202595 (or 2202564 counting only the distinct ones).

The product of its digits is 5184, while the sum is 29.

The square root of 2116634213 is about 46006.8931030992. The cubic root of 2116634213 is about 1283.9514553921.

The spelling of 2116634213 in words is "two billion, one hundred sixteen million, six hundred thirty-four thousand, two hundred thirteen".