3884858584861 has 2 divisors, whose sum is σ = 3884858584862. Its totient is φ = 3884858584860.

The previous prime is 3884858584823. The next prime is 3884858584903. The reversal of 3884858584861 is 1684858584883.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3297383856900 + 587474727961 = 1815870^2 + 766469^2 .

It is an emirp because it is prime and its reverse (1684858584883) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3884858584861 - 2²¹ = 3884856487709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3884858584661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1942429292430 + 1942429292431.

It is an arithmetic number, because the mean of its divisors is an integer number (1942429292431).

Almost surely, 2^{3884858584861} is an apocalyptic number.

It is an amenable number.

3884858584861 is a deficient number, since it is larger than the sum of its proper divisors (1).

3884858584861 is an equidigital number, since it uses as much as digits as its factorization.

3884858584861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1887436800, while the sum is 76.

The spelling of 3884858584861 in words is "three trillion, eight hundred eighty-four billion, eight hundred fifty-eight million, five hundred eighty-four thousand, eight hundred sixty-one".