9481315521 has 16 divisors (see below), whose sum is σ = 12781408640. Its totient is φ = 6251212800.

The previous prime is 9481315489. The next prime is 9481315541. The reversal of 9481315521 is 1255131849.

It is not a de Polignac number, because 9481315521 - 2⁵ = 9481315489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9481315521.

It is not an unprimeable number, because it can be changed into a prime (9481315541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 217671 + ... + 257571.

It is an arithmetic number, because the mean of its divisors is an integer number (798838040).

Almost surely, 2^9481315521 is an apocalyptic number.

It is an amenable number.

9481315521 is a deficient number, since it is larger than the sum of its proper divisors (3300093119).

9481315521 is a wasteful number, since it uses less digits than its factorization.

9481315521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40776.

The product of its digits is 43200, while the sum is 39.

The square root of 9481315521 is about 97372.0469179939. The cubic root of 9481315521 is about 2116.5223868617.

The spelling of 9481315521 in words is "nine billion, four hundred eighty-one million, three hundred fifteen thousand, five hundred twenty-one".