9981926201 has 8 divisors (see below), whose sum is σ = 10755031560. Its totient is φ = 9209572992.

The previous prime is 9981926197. The next prime is 9981926209. The reversal of 9981926201 is 1026291899.

9981926201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 146047225 + 9835878976 = 12085^2 + 99176^2 .

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 9981926201 - 2² = 9981926197 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9981926209) 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, 160316 + ... + 213693.

It is an arithmetic number, because the mean of its divisors is an integer number (1344378945).

Almost surely, 2^9981926201 is an apocalyptic number.

It is an amenable number.

9981926201 is a deficient number, since it is larger than the sum of its proper divisors (773105359).

9981926201 is a wasteful number, since it uses less digits than its factorization.

9981926201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376075.

The product of its (nonzero) digits is 139968, while the sum is 47.

The square root of 9981926201 is about 99909.5901352818. The cubic root of 9981926201 is about 2153.1359466249.

The spelling of 9981926201 in words is "nine billion, nine hundred eighty-one million, nine hundred twenty-six thousand, two hundred one".