9981354193 has 2 divisors, whose sum is σ = 9981354194. Its totient is φ = 9981354192.

The previous prime is 9981354179. The next prime is 9981354199. The reversal of 9981354193 is 3914531899.

It is a happy number.

9981354193 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7467033744 + 2514320449 = 86412^2 + 50143^2 .

It is an emirp because it is prime and its reverse (3914531899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9981354193 - 2¹⁷ = 9981223121 is a prime.

It is a super-2 number, since 2×9981354193² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9981354193.

It is not a weakly prime, because it can be changed into another prime (9981354199) 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 as a sum of consecutive naturals, namely, 4990677096 + 4990677097.

It is an arithmetic number, because the mean of its divisors is an integer number (4990677097).

Almost surely, 2^9981354193 is an apocalyptic number.

It is an amenable number.

9981354193 is a deficient number, since it is larger than the sum of its proper divisors (1).

9981354193 is an equidigital number, since it uses as much as digits as its factorization.

9981354193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1049760, while the sum is 52.

The square root of 9981354193 is about 99906.7274661722. The cubic root of 9981354193 is about 2153.0948178057.

The spelling of 9981354193 in words is "nine billion, nine hundred eighty-one million, three hundred fifty-four thousand, one hundred ninety-three".