3905852509850 has 24 divisors (see below), whose sum is σ = 7284362608380. Its totient is φ = 1558152414720.

The previous prime is 3905852509849. The next prime is 3905852509859. The reversal of 3905852509850 is 589052585093.

It can be written as a sum of positive squares in 6 ways, for example, as 2009258055289 + 1896594454561 = 1417483^2 + 1377169^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3905852509850.

It is not an unprimeable number, because it can be changed into a prime (3905852509859) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104695895 + ... + 104733194.

Almost surely, 2^{3905852509850} is an apocalyptic number.

3905852509850 is a deficient number, since it is larger than the sum of its proper divisors (3378510098530).

3905852509850 is a wasteful number, since it uses less digits than its factorization.

3905852509850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209429474 (or 209429469 counting only the distinct ones).

The product of its (nonzero) digits is 19440000, while the sum is 59.

The spelling of 3905852509850 in words is "three trillion, nine hundred five billion, eight hundred fifty-two million, five hundred nine thousand, eight hundred fifty".