9998149111 has 2 divisors, whose sum is σ = 9998149112. Its totient is φ = 9998149110.

The previous prime is 9998149097. The next prime is 9998149121. The reversal of 9998149111 is 1119418999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9998149111 - 2⁵ = 9998149079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9998149121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4999074555 + 4999074556.

It is an arithmetic number, because the mean of its divisors is an integer number (4999074556).

Almost surely, 2^9998149111 is an apocalyptic number.

9998149111 is a deficient number, since it is larger than the sum of its proper divisors (1).

9998149111 is an equidigital number, since it uses as much as digits as its factorization.

9998149111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209952, while the sum is 52.

The square root of 9998149111 is about 99990.7451267366. The cubic root of 9998149111 is about 2154.3017611814.

The spelling of 9998149111 in words is "nine billion, nine hundred ninety-eight million, one hundred forty-nine thousand, one hundred eleven".