2131967684 has 48 divisors (see below), whose sum is σ = 4681299840. Its totient is φ = 825327360.

The previous prime is 2131967657. The next prime is 2131967689. The reversal of 2131967684 is 4867691312.

It is not an unprimeable number, because it can be changed into a prime (2131967689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26312 + ... + 70400.

It is an arithmetic number, because the mean of its divisors is an integer number (97527080).

Almost surely, 2^2131967684 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2131967684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2340649920).

2131967684 is an abundant number, since it is smaller than the sum of its proper divisors (2549332156).

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

2131967684 is a wasteful number, since it uses less digits than its factorization.

2131967684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44268 (or 44266 counting only the distinct ones).

The product of its digits is 435456, while the sum is 47.

The square root of 2131967684 is about 46173.2355807994. The cubic root of 2131967684 is about 1287.0444291859.

The spelling of 2131967684 in words is "two billion, one hundred thirty-one million, nine hundred sixty-seven thousand, six hundred eighty-four".