4086521834 has 16 divisors (see below), whose sum is σ = 6399340200. Its totient is φ = 1954701504.

The previous prime is 4086521833. The next prime is 4086521837. The reversal of 4086521834 is 4381256804.

It can be written as a sum of positive squares in 4 ways, for example, as 2520341209 + 1566180625 = 50203^2 + 39575^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4086521791 and 4086521800.

It is not an unprimeable number, because it can be changed into a prime (4086521833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 316877 + ... + 329520.

Almost surely, 2^4086521834 is an apocalyptic number.

4086521834 is a deficient number, since it is larger than the sum of its proper divisors (2312818366).

4086521834 is a wasteful number, since it uses less digits than its factorization.

4086521834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646537.

The product of its (nonzero) digits is 184320, while the sum is 41.

The square root of 4086521834 is about 63925.9089415239. The cubic root of 4086521834 is about 1598.7649106438.

The spelling of 4086521834 in words is "four billion, eighty-six million, five hundred twenty-one thousand, eight hundred thirty-four".