3856454855 has 16 divisors (see below), whose sum is σ = 5049952128. Its totient is φ = 2803860000.

The previous prime is 3856454837. The next prime is 3856454863. The reversal of 3856454855 is 5584546583.

It is a de Polignac number, because none of the positive numbers 2^k-3856454855 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3856454797 and 3856454806.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 223280 + ... + 239930.

It is an arithmetic number, because the mean of its divisors is an integer number (315622008).

Almost surely, 2^3856454855 is an apocalyptic number.

3856454855 is a deficient number, since it is larger than the sum of its proper divisors (1193497273).

3856454855 is a wasteful number, since it uses less digits than its factorization.

3856454855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20878.

The product of its digits is 11520000, while the sum is 53.

The square root of 3856454855 is about 62100.3611503186. The cubic root of 3856454855 is about 1568.1806253584.

The spelling of 3856454855 in words is "three billion, eight hundred fifty-six million, four hundred fifty-four thousand, eight hundred fifty-five".