4919840789 has 2 divisors, whose sum is σ = 4919840790. Its totient is φ = 4919840788.

The previous prime is 4919840773. The next prime is 4919840881. The reversal of 4919840789 is 9870489194.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4769974225 + 149866564 = 69065^2 + 12242^2 .

It is a cyclic number.

It is not a de Polignac number, because 4919840789 - 2⁴ = 4919840773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4919840719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2459920394 + 2459920395.

It is an arithmetic number, because the mean of its divisors is an integer number (2459920395).

Almost surely, 2^4919840789 is an apocalyptic number.

It is an amenable number.

4919840789 is a deficient number, since it is larger than the sum of its proper divisors (1).

4919840789 is an equidigital number, since it uses as much as digits as its factorization.

4919840789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5225472, while the sum is 59.

The square root of 4919840789 is about 70141.5767501701. The cubic root of 4919840789 is about 1700.7886524163.

The spelling of 4919840789 in words is "four billion, nine hundred nineteen million, eight hundred forty thousand, seven hundred eighty-nine".