9898987519 has 2 divisors, whose sum is σ = 9898987520. Its totient is φ = 9898987518.

The previous prime is 9898987507. The next prime is 9898987543. The reversal of 9898987519 is 9157898989.

9898987519 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (9157898989) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9898987519 - 2²³ = 9890598911 is a prime.

It is a super-2 number, since 2×9898987519² (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 (9898987589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4949493759 + 4949493760.

It is an arithmetic number, because the mean of its divisors is an integer number (4949493760).

Almost surely, 2^9898987519 is an apocalyptic number.

9898987519 is a deficient number, since it is larger than the sum of its proper divisors (1).

9898987519 is an equidigital number, since it uses as much as digits as its factorization.

9898987519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 117573120, while the sum is 73.

The square root of 9898987519 is about 99493.6556721081. The cubic root of 9898987519 is about 2147.1559669027.

The spelling of 9898987519 in words is "nine billion, eight hundred ninety-eight million, nine hundred eighty-seven thousand, five hundred nineteen".