9918530459 has 4 divisors (see below), whose sum is σ = 9925482504. Its totient is φ = 9911578416.

The previous prime is 9918530449. The next prime is 9918530527. The reversal of 9918530459 is 9540358199.

It is a happy number.

9918530459 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9540358199 = 1543 ⋅6182993.

It is a cyclic number.

It is not a de Polignac number, because 9918530459 - 2²⁰ = 9917481883 is a prime.

It is a super-2 number, since 2×9918530459² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9918530459.

It is not an unprimeable number, because it can be changed into a prime (9918530429) 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 in 3 ways as a sum of consecutive naturals, for example, 3473882 + ... + 3476735.

It is an arithmetic number, because the mean of its divisors is an integer number (2481370626).

Almost surely, 2^9918530459 is an apocalyptic number.

9918530459 is a deficient number, since it is larger than the sum of its proper divisors (6952045).

9918530459 is a wasteful number, since it uses less digits than its factorization.

9918530459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6952044.

The product of its (nonzero) digits is 1749600, while the sum is 53.

The square root of 9918530459 is about 99591.8192373249. The cubic root of 9918530459 is about 2148.5680357723.

The spelling of 9918530459 in words is "nine billion, nine hundred eighteen million, five hundred thirty thousand, four hundred fifty-nine".