4788448781 has 2 divisors, whose sum is σ = 4788448782. Its totient is φ = 4788448780.

The previous prime is 4788448733. The next prime is 4788448817. The reversal of 4788448781 is 1878448874.

Together with next prime (4788448817) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4291560100 + 496888681 = 65510^2 + 22291^2 .

It is a cyclic number.

It is not a de Polignac number, because 4788448781 - 2¹⁰ = 4788447757 is a prime.

It is a super-2 number, since 2×4788448781² = 45858483456520771922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4788448781.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4788448711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2394224390 + 2394224391.

It is an arithmetic number, because the mean of its divisors is an integer number (2394224391).

Almost surely, 2^4788448781 is an apocalyptic number.

It is an amenable number.

4788448781 is a deficient number, since it is larger than the sum of its proper divisors (1).

4788448781 is an equidigital number, since it uses as much as digits as its factorization.

4788448781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12845056, while the sum is 59.

The square root of 4788448781 is about 69198.6183460335. The cubic root of 4788448781 is about 1685.5110943318.

The spelling of 4788448781 in words is "four billion, seven hundred eighty-eight million, four hundred forty-eight thousand, seven hundred eighty-one".