5384816621 has 2 divisors, whose sum is σ = 5384816622. Its totient is φ = 5384816620.

The previous prime is 5384816617. The next prime is 5384816677. The reversal of 5384816621 is 1266184835.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4060875625 + 1323940996 = 63725^2 + 36386^2 .

It is a cyclic number.

It is not a de Polignac number, because 5384816621 - 2² = 5384816617 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5384816611) 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 as a sum of consecutive naturals, namely, 2692408310 + 2692408311.

It is an arithmetic number, because the mean of its divisors is an integer number (2692408311).

Almost surely, 2^5384816621 is an apocalyptic number.

It is an amenable number.

5384816621 is a deficient number, since it is larger than the sum of its proper divisors (1).

5384816621 is an equidigital number, since it uses as much as digits as its factorization.

5384816621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 276480, while the sum is 44.

The square root of 5384816621 is about 73381.3097525521. The cubic root of 5384816621 is about 1752.7647857040.

The spelling of 5384816621 in words is "five billion, three hundred eighty-four million, eight hundred sixteen thousand, six hundred twenty-one".