9135149598481 has 3 divisors (see below), whose sum is σ = 9135152620923. Its totient is φ = 9135146576040.

The previous prime is 9135149598439. The next prime is 9135149598499. The reversal of 9135149598481 is 1848959415319.

The square root of 9135149598481 is 3022441.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 1926568984081 + 7208580614400 = 1388009^2 + 2684880^2 .

It is not a de Polignac number, because 9135149598481 - 2⁷ = 9135149598353 is a prime.

It is a super-2 number, since 2×9135149598481² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9135149598181) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1511221 + ... + 4533661.

It is an arithmetic number, because the mean of its divisors is an integer number (3045050873641).

Almost surely, 2^{9135149598481} is an apocalyptic number.

9135149598481 is the 3022441-st square number.

9135149598481 is the 1511221-st centered octagonal number.

It is an amenable number.

9135149598481 is a deficient number, since it is larger than the sum of its proper divisors (3022442).

9135149598481 is an frugal number, since it uses more digits than its factorization.

9135149598481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6044882 (or 3022441 counting only the distinct ones).

The product of its digits is 55987200, while the sum is 67.

The spelling of 9135149598481 in words is "nine trillion, one hundred thirty-five billion, one hundred forty-nine million, five hundred ninety-eight thousand, four hundred eighty-one".