4821585491 has 2 divisors, whose sum is σ = 4821585492. Its totient is φ = 4821585490.

The previous prime is 4821585487. The next prime is 4821585493. The reversal of 4821585491 is 1945851284.

4821585491 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4821585491 - 2² = 4821585487 is a prime.

It is a super-2 number, since 2×4821585491² = 46495373294043422162, which contains 22 as substring.

Together with 4821585493, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4821585493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2410792745 + 2410792746.

It is an arithmetic number, because the mean of its divisors is an integer number (2410792746).

Almost surely, 2^4821585491 is an apocalyptic number.

4821585491 is a deficient number, since it is larger than the sum of its proper divisors (1).

4821585491 is an equidigital number, since it uses as much as digits as its factorization.

4821585491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 460800, while the sum is 47.

The square root of 4821585491 is about 69437.6374238064. The cubic root of 4821585491 is about 1689.3901480568.

The spelling of 4821585491 in words is "four billion, eight hundred twenty-one million, five hundred eighty-five thousand, four hundred ninety-one".