9481311440 has 40 divisors (see below), whose sum is σ = 22176080640. Its totient is φ = 3769809536.

The previous prime is 9481311431. The next prime is 9481311449. The reversal of 9481311440 is 441131849.

It is an interprime number because it is at equal distance from previous prime (9481311431) and next prime (9481311449).

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 9481311440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9481311449) 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 7 ways as a sum of consecutive naturals, for example, 341480 + ... + 368199.

It is an arithmetic number, because the mean of its divisors is an integer number (554402016).

Almost surely, 2^9481311440 is an apocalyptic number.

It is an amenable number.

9481311440 is an abundant number, since it is smaller than the sum of its proper divisors (12694769200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9481311440 is a wasteful number, since it uses less digits than its factorization.

9481311440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709859 (or 709853 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 9481311440 is about 97372.0259622855. The cubic root of 9481311440 is about 2116.5220831932.

The spelling of 9481311440 in words is "nine billion, four hundred eighty-one million, three hundred eleven thousand, four hundred forty".