9973616191 has 16 divisors (see below), whose sum is σ = 12441876480. Its totient is φ = 7767125280.

The previous prime is 9973616189. The next prime is 9973616203. The reversal of 9973616191 is 1916163799.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 9973616191 - 2¹ = 9973616189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9973616101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98625 + ... + 172261.

It is an arithmetic number, because the mean of its divisors is an integer number (777617280).

Almost surely, 2^9973616191 is an apocalyptic number.

9973616191 is a deficient number, since it is larger than the sum of its proper divisors (2468260289).

9973616191 is a wasteful number, since it uses less digits than its factorization.

9973616191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75414.

The product of its digits is 551124, while the sum is 52.

The square root of 9973616191 is about 99867.9938268513. The cubic root of 9973616191 is about 2152.5382814579.

The spelling of 9973616191 in words is "nine billion, nine hundred seventy-three million, six hundred sixteen thousand, one hundred ninety-one".