2081178904 has 16 divisors (see below), whose sum is σ = 4459669200. Its totient is φ = 891933792.

The previous prime is 2081178899. The next prime is 2081178977. The reversal of 2081178904 is 4098711802.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18581899 + ... + 18582010.

It is an arithmetic number, because the mean of its divisors is an integer number (278729325).

Almost surely, 2^2081178904 is an apocalyptic number.

It is an amenable number.

2081178904 is an abundant number, since it is smaller than the sum of its proper divisors (2378490296).

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

2081178904 is a wasteful number, since it uses less digits than its factorization.

2081178904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37163922 (or 37163918 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 40.

The square root of 2081178904 is about 45619.9397632220. The cubic root of 2081178904 is about 1276.7419796034.

The spelling of 2081178904 in words is "two billion, eighty-one million, one hundred seventy-eight thousand, nine hundred four".