9981150919 has 2 divisors, whose sum is σ = 9981150920. Its totient is φ = 9981150918.

The previous prime is 9981150869. The next prime is 9981150923. The reversal of 9981150919 is 9190511899.

9981150919 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 is a cyclic number.

It is not a de Polignac number, because 9981150919 - 2⁹ = 9981150407 is a prime.

It is a super-2 number, since 2×9981150919² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9981154919) 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, 4990575459 + 4990575460.

It is an arithmetic number, because the mean of its divisors is an integer number (4990575460).

Almost surely, 2^9981150919 is an apocalyptic number.

9981150919 is a deficient number, since it is larger than the sum of its proper divisors (1).

9981150919 is an equidigital number, since it uses as much as digits as its factorization.

9981150919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 262440, while the sum is 52.

The square root of 9981150919 is about 99905.7101421135. The cubic root of 9981150919 is about 2153.0802015136.

The spelling of 9981150919 in words is "nine billion, nine hundred eighty-one million, one hundred fifty thousand, nine hundred nineteen".