3855535568 has 20 divisors (see below), whose sum is σ = 7671995940. Its totient is φ = 1875665664.

The previous prime is 3855535559. The next prime is 3855535591. The reversal of 3855535568 is 8655355583.

It can be written as a sum of positive squares in 2 ways, for example, as 3748867984 + 106667584 = 61228^2 + 10328^2 .

It is a super-2 number, since 2×3855535568² = 29730309032226165248, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3255773 + ... + 3256956.

It is an arithmetic number, because the mean of its divisors is an integer number (383599797).

Almost surely, 2^3855535568 is an apocalyptic number.

It is an amenable number.

3855535568 is a deficient number, since it is larger than the sum of its proper divisors (3816460372).

3855535568 is a wasteful number, since it uses less digits than its factorization.

3855535568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6512774 (or 6512768 counting only the distinct ones).

The product of its digits is 10800000, while the sum is 53.

The square root of 3855535568 is about 62092.9590855517. The cubic root of 3855535568 is about 1568.0560098173.

The spelling of 3855535568 in words is "three billion, eight hundred fifty-five million, five hundred thirty-five thousand, five hundred sixty-eight".