2178214488 has 96 divisors (see below), whose sum is σ = 6339818160. Its totient is φ = 673136640.

The previous prime is 2178214487. The next prime is 2178214499. The reversal of 2178214488 is 8844128712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2178214481) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68728 + ... + 95288.

Almost surely, 2^2178214488 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 2178214488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3169909080).

2178214488 is an abundant number, since it is smaller than the sum of its proper divisors (4161603672).

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

2178214488 is a wasteful number, since it uses less digits than its factorization.

2178214488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26657 (or 26650 counting only the distinct ones).

The product of its digits is 229376, while the sum is 45.

The square root of 2178214488 is about 46671.3454702133. The cubic root of 2178214488 is about 1296.2841597987.

The spelling of 2178214488 in words is "two billion, one hundred seventy-eight million, two hundred fourteen thousand, four hundred eighty-eight".