3851085555 has 12 divisors (see below), whose sum is σ = 6675215040. Its totient is φ = 2053912272.

The previous prime is 3851085551. The next prime is 3851085613. The reversal of 3851085555 is 5555801583.

It is a happy number.

3851085555 is a `hidden beast` number, since 3 + 8 + 5 + 10 + 85 + 555 = 666.

It is not a de Polignac number, because 3851085555 - 2² = 3851085551 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 85579679 = 3851085555 / (3 + 8 + 5 + 1 + 0 + 8 + 5 + 5 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 3851085555.

It is not an unprimeable number, because it can be changed into a prime (3851085551) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 42789795 + ... + 42789884.

It is an arithmetic number, because the mean of its divisors is an integer number (556267920).

Almost surely, 2^3851085555 is an apocalyptic number.

3851085555 is a deficient number, since it is larger than the sum of its proper divisors (2824129485).

3851085555 is a wasteful number, since it uses less digits than its factorization.

3851085555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85579690 (or 85579687 counting only the distinct ones).

The product of its (nonzero) digits is 600000, while the sum is 45.

The square root of 3851085555 is about 62057.1152648913. The cubic root of 3851085555 is about 1567.4525004112.

The spelling of 3851085555 in words is "three billion, eight hundred fifty-one million, eighty-five thousand, five hundred fifty-five".