2116211895 has 48 divisors (see below), whose sum is σ = 4281338880. Its totient is φ = 946821312.

The previous prime is 2116211891. The next prime is 2116211917. The reversal of 2116211895 is 5981126112.

2116211895 is a `hidden beast` number, since 2 + 11 + 621 + 18 + 9 + 5 = 666.

It is not a de Polignac number, because 2116211895 - 2² = 2116211891 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2116211891) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 56665 + ... + 86274.

It is an arithmetic number, because the mean of its divisors is an integer number (89194560).

Almost surely, 2^2116211895 is an apocalyptic number.

2116211895 is an abundant number, since it is smaller than the sum of its proper divisors (2165126985).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2116211895 is a wasteful number, since it uses less digits than its factorization.

2116211895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143004 (or 143001 counting only the distinct ones).

The product of its digits is 8640, while the sum is 36.

The square root of 2116211895 is about 46002.3031488642. The cubic root of 2116211895 is about 1283.8660569366.

The spelling of 2116211895 in words is "two billion, one hundred sixteen million, two hundred eleven thousand, eight hundred ninety-five".