3859865522 has 18 divisors (see below), whose sum is σ = 5845550013. Its totient is φ = 1911525672.

The previous prime is 3859865467. The next prime is 3859865579. The reversal of 3859865522 is 2255689583.

It can be written as a sum of positive squares in 2 ways, for example, as 2472973441 + 1386892081 = 49729^2 + 37241^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=43931.

It is a Duffinian 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 8 ways as a sum of consecutive naturals, for example, 17308703 + ... + 17308925.

Almost surely, 2^3859865522 is an apocalyptic number.

3859865522 is a deficient number, since it is larger than the sum of its proper divisors (1985684491).

3859865522 is an frugal number, since it uses more digits than its factorization.

3859865522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842 (or 422 counting only the distinct ones).

The product of its digits is 5184000, while the sum is 53.

The square root of 3859865522 is about 62127.8160086124. The cubic root of 3859865522 is about 1568.6427912703.

The spelling of 3859865522 in words is "three billion, eight hundred fifty-nine million, eight hundred sixty-five thousand, five hundred twenty-two".