4735868821 has 2 divisors, whose sum is σ = 4735868822. Its totient is φ = 4735868820.

The previous prime is 4735868779. The next prime is 4735868831. The reversal of 4735868821 is 1288685374.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4653149796 + 82719025 = 68214^2 + 9095^2 .

It is a cyclic number.

It is not a de Polignac number, because 4735868821 - 2¹⁷ = 4735737749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4735868831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2367934410 + 2367934411.

It is an arithmetic number, because the mean of its divisors is an integer number (2367934411).

Almost surely, 2^4735868821 is an apocalyptic number.

It is an amenable number.

4735868821 is a deficient number, since it is larger than the sum of its proper divisors (1).

4735868821 is an equidigital number, since it uses as much as digits as its factorization.

4735868821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2580480, while the sum is 52.

The square root of 4735868821 is about 68817.6490516786. The cubic root of 4735868821 is about 1679.3190764934.

The spelling of 4735868821 in words is "four billion, seven hundred thirty-five million, eight hundred sixty-eight thousand, eight hundred twenty-one".