2131976688 has 20 divisors (see below), whose sum is σ = 5507606568. Its totient is φ = 710658880.

The previous prime is 2131976669. The next prime is 2131976689. The reversal of 2131976688 is 8866791312.

It is a self number, because there is not a number n which added to its sum of digits gives 2131976688.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131976689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22208043 + ... + 22208138.

Almost surely, 2^2131976688 is an apocalyptic number.

It is an amenable number.

2131976688 is an abundant number, since it is smaller than the sum of its proper divisors (3375629880).

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

2131976688 is a wasteful number, since it uses less digits than its factorization.

2131976688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44416192 (or 44416186 counting only the distinct ones).

The product of its digits is 870912, while the sum is 51.

The square root of 2131976688 is about 46173.3330830686. Note that the first 3 decimals coincide. The cubic root of 2131976688 is about 1287.0462410538.

The spelling of 2131976688 in words is "two billion, one hundred thirty-one million, nine hundred seventy-six thousand, six hundred eighty-eight".