9491498641 has 4 divisors (see below), whose sum is σ = 9505039284. Its totient is φ = 9477958000.

The previous prime is 9491498623. The next prime is 9491498699. The reversal of 9491498641 is 1468941949.

9491498641 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: 1468941949 = 773 ⋅1900313.

It can be written as a sum of positive squares in 2 ways, for example, as 9082852416 + 408646225 = 95304^2 + 20215^2 .

It is a cyclic number.

It is not a de Polignac number, because 9491498641 - 2¹⁵ = 9491465873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9491498441) 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, 6769270 + ... + 6770671.

It is an arithmetic number, because the mean of its divisors is an integer number (2376259821).

Almost surely, 2^9491498641 is an apocalyptic number.

It is an amenable number.

9491498641 is a deficient number, since it is larger than the sum of its proper divisors (13540643).

9491498641 is a wasteful number, since it uses less digits than its factorization.

9491498641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13540642.

The product of its digits is 2239488, while the sum is 55.

The square root of 9491498641 is about 97424.3226355719. The cubic root of 9491498641 is about 2117.2798446904.

The spelling of 9491498641 in words is "nine billion, four hundred ninety-one million, four hundred ninety-eight thousand, six hundred forty-one".