9965001993 has 16 divisors (see below), whose sum is σ = 13576555776. Its totient is φ = 6498541440.

The previous prime is 9965001983. The next prime is 9965001997. The reversal of 9965001993 is 3991005699.

It is not a de Polignac number, because 9965001993 - 2¹⁸ = 9964739849 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9965001997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 263283 + ... + 298743.

It is an arithmetic number, because the mean of its divisors is an integer number (848534736).

Almost surely, 2^9965001993 is an apocalyptic number.

It is an amenable number.

9965001993 is a deficient number, since it is larger than the sum of its proper divisors (3611553783).

9965001993 is a wasteful number, since it uses less digits than its factorization.

9965001993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37504.

The product of its (nonzero) digits is 590490, while the sum is 51.

The square root of 9965001993 is about 99824.8565889278. The cubic root of 9965001993 is about 2151.9183882144.

The spelling of 9965001993 in words is "nine billion, nine hundred sixty-five million, one thousand, nine hundred ninety-three".