9918536015 has 16 divisors (see below), whose sum is σ = 12713912928. Its totient is φ = 7401977856.

The previous prime is 9918535993. The next prime is 9918536057. The reversal of 9918536015 is 5106358199.

It is a cyclic number.

It is not a de Polignac number, because 9918536015 - 2¹⁶ = 9918470479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 506717 + ... + 525926.

It is an arithmetic number, because the mean of its divisors is an integer number (794619558).

Almost surely, 2^9918536015 is an apocalyptic number.

9918536015 is a deficient number, since it is larger than the sum of its proper divisors (2795376913).

9918536015 is a wasteful number, since it uses less digits than its factorization.

9918536015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1032778.

The product of its (nonzero) digits is 291600, while the sum is 47.

The square root of 9918536015 is about 99591.8471311784. The cubic root of 9918536015 is about 2148.5684369554.

The spelling of 9918536015 in words is "nine billion, nine hundred eighteen million, five hundred thirty-six thousand, fifteen".