2111680940 has 24 divisors (see below), whose sum is σ = 4577580672. Its totient is φ = 817424640.

The previous prime is 2111680931. The next prime is 2111680973. The reversal of 2111680940 is 490861112.

It is a junction number, because it is equal to n+sod(n) for n = 2111680897 and 2111680906.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1702349 + ... + 1703588.

It is an arithmetic number, because the mean of its divisors is an integer number (190732528).

Almost surely, 2^2111680940 is an apocalyptic number.

2111680940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2111680940 is an abundant number, since it is smaller than the sum of its proper divisors (2465899732).

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

2111680940 is a wasteful number, since it uses less digits than its factorization.

2111680940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3405977 (or 3405975 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 2111680940 is about 45953.0297151341. The cubic root of 2111680940 is about 1282.9491204174.

The spelling of 2111680940 in words is "two billion, one hundred eleven million, six hundred eighty thousand, nine hundred forty".