9491334863 has 4 divisors (see below), whose sum is σ = 9491607840. Its totient is φ = 9491061888.

The previous prime is 9491334857. The next prime is 9491334943. The reversal of 9491334863 is 3684331949.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3684331949 = 619 ⋅5952071.

It is a cyclic number.

It is not a de Polignac number, because 9491334863 - 2⁴ = 9491334847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9491334823) 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 3 ways as a sum of consecutive naturals, for example, 75143 + ... + 156936.

It is an arithmetic number, because the mean of its divisors is an integer number (2372901960).

Almost surely, 2^9491334863 is an apocalyptic number.

9491334863 is a deficient number, since it is larger than the sum of its proper divisors (272977).

9491334863 is a wasteful number, since it uses less digits than its factorization.

9491334863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272976.

The product of its digits is 1679616, while the sum is 50.

The square root of 9491334863 is about 97423.4820923580. The cubic root of 9491334863 is about 2117.2676665695.

The spelling of 9491334863 in words is "nine billion, four hundred ninety-one million, three hundred thirty-four thousand, eight hundred sixty-three".