4085786881 has 4 divisors (see below), whose sum is σ = 4457222064. Its totient is φ = 3714351700.

The previous prime is 4085786869. The next prime is 4085786911. The reversal of 4085786881 is 1886875804.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4085786881 - 2⁵ = 4085786849 is a prime.

It is a super-3 number, since 3×4085786881³ (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 (4085781881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185717575 + ... + 185717596.

It is an arithmetic number, because the mean of its divisors is an integer number (1114305516).

Almost surely, 2^4085786881 is an apocalyptic number.

It is an amenable number.

4085786881 is a deficient number, since it is larger than the sum of its proper divisors (371435183).

4085786881 is a wasteful number, since it uses less digits than its factorization.

4085786881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371435182.

The product of its (nonzero) digits is 3440640, while the sum is 55.

The square root of 4085786881 is about 63920.1602078718. The cubic root of 4085786881 is about 1598.6690599780.

The spelling of 4085786881 in words is "four billion, eighty-five million, seven hundred eighty-six thousand, eight hundred eighty-one".