2578865884 has 18 divisors (see below), whose sum is σ = 5249834520. Its totient is φ = 1105228152.

The previous prime is 2578865879. The next prime is 2578865893. The reversal of 2578865884 is 4885688752.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6578544 + ... + 6578935.

Almost surely, 2^2578865884 is an apocalyptic number.

It is an amenable number.

2578865884 is an abundant number, since it is smaller than the sum of its proper divisors (2670968636).

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

2578865884 is a wasteful number, since it uses less digits than its factorization.

2578865884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13157497 (or 13157488 counting only the distinct ones).

The product of its digits is 34406400, while the sum is 61.

The square root of 2578865884 is about 50782.5352261976. The cubic root of 2578865884 is about 1371.3329743901.

The spelling of 2578865884 in words is "two billion, five hundred seventy-eight million, eight hundred sixty-five thousand, eight hundred eighty-four".