2116111904 has 24 divisors (see below), whose sum is σ = 4309755660. Its totient is φ = 1021570816.

The previous prime is 2116111891. The next prime is 2116111927. The reversal of 2116111904 is 4091116112.

It can be written as a sum of positive squares in 2 ways, for example, as 2092879504 + 23232400 = 45748^2 + 4820^2 .

It is a super-3 number, since 3×2116111904³ (a number of 29 digits) contains 333 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1139219 + ... + 1141074.

Almost surely, 2^2116111904 is an apocalyptic number.

It is an amenable number.

2116111904 is an abundant number, since it is smaller than the sum of its proper divisors (2193643756).

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

2116111904 is a wasteful number, since it uses less digits than its factorization.

2116111904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2280332 (or 2280324 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 26.

The square root of 2116111904 is about 46001.2163317450. The cubic root of 2116111904 is about 1283.8458357302.

The spelling of 2116111904 in words is "two billion, one hundred sixteen million, one hundred eleven thousand, nine hundred four".