9948348581 has 4 divisors (see below), whose sum is σ = 9952241772. Its totient is φ = 9944455392.

The previous prime is 9948348569. The next prime is 9948348583. The reversal of 9948348581 is 1858438499.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8065656481 + 1882692100 = 89809^2 + 43390^2 .

It is a cyclic number.

It is not a de Polignac number, because 9948348581 - 2¹⁴ = 9948332197 is a prime.

It is a super-2 number, since 2×9948348581² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9948348581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9948348583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1942760 + ... + 1947873.

It is an arithmetic number, because the mean of its divisors is an integer number (2488060443).

Almost surely, 2^9948348581 is an apocalyptic number.

It is an amenable number.

9948348581 is a deficient number, since it is larger than the sum of its proper divisors (3893191).

9948348581 is a wasteful number, since it uses less digits than its factorization.

9948348581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3893190.

The product of its digits is 9953280, while the sum is 59.

The square root of 9948348581 is about 99741.4085573289. The cubic root of 9948348581 is about 2150.7189649580.

The spelling of 9948348581 in words is "nine billion, nine hundred forty-eight million, three hundred forty-eight thousand, five hundred eighty-one".