2132178944 has 72 divisors (see below), whose sum is σ = 4959601920. Its totient is φ = 913747968.

The previous prime is 2132178941. The next prime is 2132178967. The reversal of 2132178944 is 4498712312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2132178941) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 89729 + ... + 110975.

It is an arithmetic number, because the mean of its divisors is an integer number (68883360).

Almost surely, 2^2132178944 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 2132178944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2479800960).

2132178944 is an abundant number, since it is smaller than the sum of its proper divisors (2827422976).

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

2132178944 is an equidigital number, since it uses as much as digits as its factorization.

2132178944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21283 (or 21256 counting only the distinct ones).

The product of its digits is 96768, while the sum is 41.

The square root of 2132178944 is about 46175.5232130617. The cubic root of 2132178944 is about 1287.0869395278.

The spelling of 2132178944 in words is "two billion, one hundred thirty-two million, one hundred seventy-eight thousand, nine hundred forty-four".