4473128749 has 2 divisors, whose sum is σ = 4473128750. Its totient is φ = 4473128748.

The previous prime is 4473128747. The next prime is 4473128761. The reversal of 4473128749 is 9478213744.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4407632100 + 65496649 = 66390^2 + 8093^2 .

It is a cyclic number.

It is not a de Polignac number, because 4473128749 - 2¹ = 4473128747 is a prime.

It is a super-3 number, since 3×4473128749³ (a number of 30 digits) contains 333 as substring.

Together with 4473128747, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4473128747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2236564374 + 2236564375.

It is an arithmetic number, because the mean of its divisors is an integer number (2236564375).

Almost surely, 2^4473128749 is an apocalyptic number.

It is an amenable number.

4473128749 is a deficient number, since it is larger than the sum of its proper divisors (1).

4473128749 is an equidigital number, since it uses as much as digits as its factorization.

4473128749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1354752, while the sum is 49.

The square root of 4473128749 is about 66881.4529522199. The cubic root of 4473128749 is about 1647.6708795672.

The spelling of 4473128749 in words is "four billion, four hundred seventy-three million, one hundred twenty-eight thousand, seven hundred forty-nine".