2578749382 has 16 divisors (see below), whose sum is σ = 4277579472. Its totient is φ = 1156101120.

The previous prime is 2578749361. The next prime is 2578749413. The reversal of 2578749382 is 2839478752.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 801243 + ... + 804454.

It is an arithmetic number, because the mean of its divisors is an integer number (267348717).

Almost surely, 2^2578749382 is an apocalyptic number.

2578749382 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2578749382 is a deficient number, since it is larger than the sum of its proper divisors (1698830090).

2578749382 is a wasteful number, since it uses less digits than its factorization.

2578749382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1605783.

The product of its digits is 6773760, while the sum is 55.

The square root of 2578749382 is about 50781.3881456582. The cubic root of 2578749382 is about 1371.3123237828.

The spelling of 2578749382 in words is "two billion, five hundred seventy-eight million, seven hundred forty-nine thousand, three hundred eighty-two".