3855185555 has 16 divisors (see below), whose sum is σ = 5001956064. Its totient is φ = 2835552000.

The previous prime is 3855185527. The next prime is 3855185563. The reversal of 3855185555 is 5555815583.

It is a de Polignac number, because none of the positive numbers 2^k-3855185555 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101834 + ... + 134463.

It is an arithmetic number, because the mean of its divisors is an integer number (312622254).

Almost surely, 2^3855185555 is an apocalyptic number.

3855185555 is a deficient number, since it is larger than the sum of its proper divisors (1146770509).

3855185555 is a wasteful number, since it uses less digits than its factorization.

3855185555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236566.

The product of its digits is 3000000, while the sum is 50.

The square root of 3855185555 is about 62090.1405619282. The cubic root of 3855185555 is about 1568.0085579923.

The spelling of 3855185555 in words is "three billion, eight hundred fifty-five million, one hundred eighty-five thousand, five hundred fifty-five".