4821890491 has 4 divisors (see below), whose sum is σ = 5260244184. Its totient is φ = 4383536800.

The previous prime is 4821890477. The next prime is 4821890537. The reversal of 4821890491 is 1940981284.

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

It is a cyclic number.

It is not a de Polignac number, because 4821890491 - 2⁵ = 4821890459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4821891491) by changing a digit.

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, 219176830 + ... + 219176851.

It is an arithmetic number, because the mean of its divisors is an integer number (1315061046).

Almost surely, 2^4821890491 is an apocalyptic number.

4821890491 is a deficient number, since it is larger than the sum of its proper divisors (438353693).

4821890491 is a wasteful number, since it uses less digits than its factorization.

4821890491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438353692.

The product of its (nonzero) digits is 165888, while the sum is 46.

The square root of 4821890491 is about 69439.8336043513. The cubic root of 4821890491 is about 1689.4257693362.

The spelling of 4821890491 in words is "four billion, eight hundred twenty-one million, eight hundred ninety thousand, four hundred ninety-one".