4491798281 has 2 divisors, whose sum is σ = 4491798282. Its totient is φ = 4491798280.

The previous prime is 4491798263. The next prime is 4491798287. The reversal of 4491798281 is 1828971944.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3677209600 + 814588681 = 60640^2 + 28541^2 .

It is a cyclic number.

It is not a de Polignac number, because 4491798281 - 2¹⁴ = 4491781897 is a prime.

It is a super-2 number, since 2×4491798281² = 40352503594389109922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4491798287) 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, 2245899140 + 2245899141.

It is an arithmetic number, because the mean of its divisors is an integer number (2245899141).

Almost surely, 2^4491798281 is an apocalyptic number.

It is an amenable number.

4491798281 is a deficient number, since it is larger than the sum of its proper divisors (1).

4491798281 is an equidigital number, since it uses as much as digits as its factorization.

4491798281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1161216, while the sum is 53.

The square root of 4491798281 is about 67020.8794406639. The cubic root of 4491798281 is about 1649.9599967039.

The spelling of 4491798281 in words is "four billion, four hundred ninety-one million, seven hundred ninety-eight thousand, two hundred eighty-one".