9801481881 has 8 divisors (see below), whose sum is σ = 13071076704. Its totient is φ = 6533104160.

The previous prime is 9801481819. The next prime is 9801481883. The reversal of 9801481881 is 1881841089.

It is a happy number.

9801481881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9801481881 - 2⁹ = 9801481369 is a prime.

It is a super-2 number, since 2×9801481881² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 9801481881.

It is not an unprimeable number, because it can be changed into a prime (9801481883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 285315 + ... + 317816.

It is an arithmetic number, because the mean of its divisors is an integer number (1633884588).

Almost surely, 2^9801481881 is an apocalyptic number.

It is an amenable number.

9801481881 is a deficient number, since it is larger than the sum of its proper divisors (3269594823).

9801481881 is a wasteful number, since it uses less digits than its factorization.

9801481881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608551.

The product of its (nonzero) digits is 147456, while the sum is 48.

The square root of 9801481881 is about 99002.4337125103. The cubic root of 9801481881 is about 2140.0828192393.

The spelling of 9801481881 in words is "nine billion, eight hundred one million, four hundred eighty-one thousand, eight hundred eighty-one".