9998681499 has 8 divisors (see below), whose sum is σ = 14812861520. Its totient is φ = 6665787648.

The previous prime is 9998681489. The next prime is 9998681513. The reversal of 9998681499 is 9941868999.

It is not a de Polignac number, because 9998681499 - 2⁸ = 9998681243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9998681449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185160742 + ... + 185160795.

It is an arithmetic number, because the mean of its divisors is an integer number (1851607690).

Almost surely, 2^9998681499 is an apocalyptic number.

9998681499 is a deficient number, since it is larger than the sum of its proper divisors (4814180021).

9998681499 is a wasteful number, since it uses less digits than its factorization.

9998681499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370321546 (or 370321540 counting only the distinct ones).

The product of its digits is 90699264, while the sum is 72.

The square root of 9998681499 is about 99993.4072776801. The cubic root of 9998681499 is about 2154.3399983936.

The spelling of 9998681499 in words is "nine billion, nine hundred ninety-eight million, six hundred eighty-one thousand, four hundred ninety-nine".