9261454991 has 4 divisors (see below), whose sum is σ = 9413282184. Its totient is φ = 9109627800.

The previous prime is 9261454931. The next prime is 9261454999. The reversal of 9261454991 is 1994541629.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1994541629 = 227 ⋅8786527.

It is a cyclic number.

It is not a de Polignac number, because 9261454991 - 2⁶ = 9261454927 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 (9261454999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75913505 + ... + 75913626.

It is an arithmetic number, because the mean of its divisors is an integer number (2353320546).

Almost surely, 2^9261454991 is an apocalyptic number.

9261454991 is a deficient number, since it is larger than the sum of its proper divisors (151827193).

9261454991 is a wasteful number, since it uses less digits than its factorization.

9261454991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151827192.

The product of its digits is 699840, while the sum is 50.

The square root of 9261454991 is about 96236.4535454211. The cubic root of 9261454991 is about 2100.0343902909.

The spelling of 9261454991 in words is "nine billion, two hundred sixty-one million, four hundred fifty-four thousand, nine hundred ninety-one".