2042878668 has 96 divisors (see below), whose sum is σ = 5044757760. Its totient is φ = 642512640.

The previous prime is 2042878637. The next prime is 2042878679. The reversal of 2042878668 is 8668782402.

It is a self number, because there is not a number n which added to its sum of digits gives 2042878668.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3090258 + ... + 3090918.

It is an arithmetic number, because the mean of its divisors is an integer number (52549560).

Almost surely, 2^2042878668 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 2042878668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2522378880).

2042878668 is an abundant number, since it is smaller than the sum of its proper divisors (3001879092).

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

2042878668 is a wasteful number, since it uses less digits than its factorization.

2042878668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887 (or 885 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 51.

The square root of 2042878668 is about 45198.2153187490. The cubic root of 2042878668 is about 1268.8614153155.

The spelling of 2042878668 in words is "two billion, forty-two million, eight hundred seventy-eight thousand, six hundred sixty-eight".