9948181 has 4 divisors (see below), whose sum is σ = 10036332. Its totient is φ = 9860032.

The previous prime is 9948173. The next prime is 9948203. The reversal of 9948181 is 1818499.

9948181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3010225 + 6937956 = 1735^2 + 2634^2 .

It is a cyclic number.

It is not a de Polignac number, because 9948181 - 2³ = 9948173 is a prime.

It is a super-2 number, since 2×9948181² = 197932610417522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9948101) 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, 43906 + ... + 44131.

It is an arithmetic number, because the mean of its divisors is an integer number (2509083).

Almost surely, 2^9948181 is an apocalyptic number.

It is an amenable number.

9948181 is a deficient number, since it is larger than the sum of its proper divisors (88151).

9948181 is a wasteful number, since it uses less digits than its factorization.

9948181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88150.

The product of its digits is 20736, while the sum is 40.

The square root of 9948181 is about 3154.0737150549. The cubic root of 9948181 is about 215.0706888526.

The spelling of 9948181 in words is "nine million, nine hundred forty-eight thousand, one hundred eighty-one".