4817163821 has 4 divisors (see below), whose sum is σ = 4818002592. Its totient is φ = 4816325052.

The previous prime is 4817163817. The next prime is 4817163899. The reversal of 4817163821 is 1283617184.

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 4817163821 - 2² = 4817163817 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4817163121) 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, 410711 + ... + 422276.

It is an arithmetic number, because the mean of its divisors is an integer number (1204500648).

Almost surely, 2^4817163821 is an apocalyptic number.

It is an amenable number.

4817163821 is a deficient number, since it is larger than the sum of its proper divisors (838771).

4817163821 is an equidigital number, since it uses as much as digits as its factorization.

4817163821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838770.

The product of its digits is 64512, while the sum is 41.

The square root of 4817163821 is about 69405.7909759697. The cubic root of 4817163821 is about 1688.8735676109.

The spelling of 4817163821 in words is "four billion, eight hundred seventeen million, one hundred sixty-three thousand, eight hundred twenty-one".