3855911081 has 8 divisors (see below), whose sum is σ = 4320136704. Its totient is φ = 3410633520.

The previous prime is 3855911057. The next prime is 3855911089. The reversal of 3855911081 is 1801195583.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3855911081 - 2¹⁰ = 3855910057 is a prime.

It is a super-3 number, since 3×3855911081³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3855911089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4736585 + ... + 4737398.

It is an arithmetic number, because the mean of its divisors is an integer number (540017088).

Almost surely, 2^3855911081 is an apocalyptic number.

It is an amenable number.

3855911081 is a deficient number, since it is larger than the sum of its proper divisors (464225623).

3855911081 is a wasteful number, since it uses less digits than its factorization.

3855911081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9474031.

The product of its (nonzero) digits is 43200, while the sum is 41.

The square root of 3855911081 is about 62095.9828088742. The cubic root of 3855911081 is about 1568.1069155251.

The spelling of 3855911081 in words is "three billion, eight hundred fifty-five million, nine hundred eleven thousand, eighty-one".