4831138985 has 4 divisors (see below), whose sum is σ = 5797366788. Its totient is φ = 3864911184.

The previous prime is 4831138979. The next prime is 4831139009. The reversal of 4831138985 is 5898311384.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2870066329 + 1961072656 = 53573^2 + 44284^2 .

It is a cyclic number.

It is not a de Polignac number, because 4831138985 - 2¹⁴ = 4831122601 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 483113894 + ... + 483113903.

It is an arithmetic number, because the mean of its divisors is an integer number (1449341697).

Almost surely, 2^4831138985 is an apocalyptic number.

It is an amenable number.

4831138985 is a deficient number, since it is larger than the sum of its proper divisors (966227803).

4831138985 is an equidigital number, since it uses as much as digits as its factorization.

4831138985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966227802.

The product of its digits is 829440, while the sum is 50.

The square root of 4831138985 is about 69506.3952812977. The cubic root of 4831138985 is about 1690.5051983332.

The spelling of 4831138985 in words is "four billion, eight hundred thirty-one million, one hundred thirty-eight thousand, nine hundred eighty-five".