9748741921 has 2 divisors, whose sum is σ = 9748741922. Its totient is φ = 9748741920.

The previous prime is 9748741883. The next prime is 9748741967. The reversal of 9748741921 is 1291478479.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9031841296 + 716900625 = 95036^2 + 26775^2 .

It is an emirp because it is prime and its reverse (1291478479) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9748741921 - 2¹¹ = 9748739873 is a prime.

It is not a weakly prime, because it can be changed into another prime (9748741721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4874370960 + 4874370961.

It is an arithmetic number, because the mean of its divisors is an integer number (4874370961).

Almost surely, 2^9748741921 is an apocalyptic number.

It is an amenable number.

9748741921 is a deficient number, since it is larger than the sum of its proper divisors (1).

9748741921 is an equidigital number, since it uses as much as digits as its factorization.

9748741921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1016064, while the sum is 52.

The square root of 9748741921 is about 98735.7175544899. The cubic root of 9748741921 is about 2136.2374507057.

The spelling of 9748741921 in words is "nine billion, seven hundred forty-eight million, seven hundred forty-one thousand, nine hundred twenty-one".