2111761912 has 32 divisors (see below), whose sum is σ = 4401694080. Its totient is φ = 943217280.

The previous prime is 2111761903. The next prime is 2111761937. The reversal of 2111761912 is 2191671112.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324283 + ... + 330730.

It is an arithmetic number, because the mean of its divisors is an integer number (137552940).

Almost surely, 2^2111761912 is an apocalyptic number.

It is an amenable number.

2111761912 is an abundant number, since it is smaller than the sum of its proper divisors (2289932168).

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

2111761912 is a wasteful number, since it uses less digits than its factorization.

2111761912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655063 (or 655059 counting only the distinct ones).

The product of its digits is 1512, while the sum is 31.

The square root of 2111761912 is about 45953.9107367371. The cubic root of 2111761912 is about 1282.9655183536.

The spelling of 2111761912 in words is "two billion, one hundred eleven million, seven hundred sixty-one thousand, nine hundred twelve".