4549838621 has 2 divisors, whose sum is σ = 4549838622. Its totient is φ = 4549838620.

The previous prime is 4549838609. The next prime is 4549838677. The reversal of 4549838621 is 1268389454.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2786678521 + 1763160100 = 52789^2 + 41990^2 .

It is a cyclic number.

It is not a de Polignac number, because 4549838621 - 2¹⁴ = 4549822237 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4549838621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4549868621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2274919310 + 2274919311.

It is an arithmetic number, because the mean of its divisors is an integer number (2274919311).

Almost surely, 2^4549838621 is an apocalyptic number.

It is an amenable number.

4549838621 is a deficient number, since it is larger than the sum of its proper divisors (1).

4549838621 is an equidigital number, since it uses as much as digits as its factorization.

4549838621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1658880, while the sum is 50.

The square root of 4549838621 is about 67452.4915848184. The cubic root of 4549838621 is about 1657.0362053421.

The spelling of 4549838621 in words is "four billion, five hundred forty-nine million, eight hundred thirty-eight thousand, six hundred twenty-one".