3905852509851 has 16 divisors (see below), whose sum is σ = 5559108099840. Its totient is φ = 2432109788640.

The previous prime is 3905852509849. The next prime is 3905852509859. The reversal of 3905852509851 is 1589052585093.

It is a happy number.

It is not a de Polignac number, because 3905852509851 - 2¹ = 3905852509849 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 482557420 + ... + 482565513.

It is an arithmetic number, because the mean of its divisors is an integer number (347444256240).

Almost surely, 2^{3905852509851} is an apocalyptic number.

3905852509851 is a deficient number, since it is larger than the sum of its proper divisors (1653255589989).

3905852509851 is a wasteful number, since it uses less digits than its factorization.

3905852509851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965123026.

The product of its (nonzero) digits is 19440000, while the sum is 60.

It can be divided in two parts, 390585 and 2509851, that added together give a triangular number (2900436 = T₂₄₀₈).

The spelling of 3905852509851 in words is "three trillion, nine hundred five billion, eight hundred fifty-two million, five hundred nine thousand, eight hundred fifty-one".