2178038044 has 72 divisors (see below), whose sum is σ = 4791938928. Its totient is φ = 858574080.

The previous prime is 2178038029. The next prime is 2178038047. The reversal of 2178038044 is 4408308712.

It is a super-2 number, since 2×2178038044² = 9487699442222691872, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2178037994 and 2178038012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2178038047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 796159 + ... + 798889.

Almost surely, 2^2178038044 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 2178038044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2395969464).

2178038044 is an abundant number, since it is smaller than the sum of its proper divisors (2613900884).

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

2178038044 is a wasteful number, since it uses less digits than its factorization.

2178038044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3075 (or 3066 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 2178038044 is about 46669.4551500229. The cubic root of 2178038044 is about 1296.2491574701.

The spelling of 2178038044 in words is "two billion, one hundred seventy-eight million, thirty-eight thousand, forty-four".