5164041821 has 2 divisors, whose sum is σ = 5164041822. Its totient is φ = 5164041820.

The previous prime is 5164041809. The next prime is 5164041853. The reversal of 5164041821 is 1281404615.

It is an a-pointer prime, because the next prime (5164041853) can be obtained adding 5164041821 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3781020100 + 1383021721 = 61490^2 + 37189^2 .

It is a cyclic number.

It is not a de Polignac number, because 5164041821 - 2¹⁴ = 5164025437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5164040821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2582020910 + 2582020911.

It is an arithmetic number, because the mean of its divisors is an integer number (2582020911).

Almost surely, 2^5164041821 is an apocalyptic number.

It is an amenable number.

5164041821 is a deficient number, since it is larger than the sum of its proper divisors (1).

5164041821 is an equidigital number, since it uses as much as digits as its factorization.

5164041821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 5164041821 is about 71861.2678777657. The cubic root of 5164041821 is about 1728.4755882097.

The spelling of 5164041821 in words is "five billion, one hundred sixty-four million, forty-one thousand, eight hundred twenty-one".