3985782526 has 16 divisors (see below), whose sum is σ = 6535021680. Its totient is φ = 1808154880.

The previous prime is 3985782503. The next prime is 3985782587. The reversal of 3985782526 is 6252875893.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166771 + ... + 189166.

It is an arithmetic number, because the mean of its divisors is an integer number (408438855).

Almost surely, 2^3985782526 is an apocalyptic number.

3985782526 is a deficient number, since it is larger than the sum of its proper divisors (2549239154).

3985782526 is a wasteful number, since it uses less digits than its factorization.

3985782526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356459.

The product of its digits is 7257600, while the sum is 55.

The square root of 3985782526 is about 63133.0541475700. The cubic root of 3985782526 is about 1585.5180831826.

It can be divided in two parts, 398578 and 2526, that added together give a palindrome (401104).

The spelling of 3985782526 in words is "three billion, nine hundred eighty-five million, seven hundred eighty-two thousand, five hundred twenty-six".