9131648 has 16 divisors (see below), whose sum is σ = 18192210. Its totient is φ = 4565760.

The previous prime is 9131641. The next prime is 9131651. The reversal of 9131648 is 8461319.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 8809024 + 322624 = 2968^2 + 568^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (9131641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35543 + ... + 35798.

Almost surely, 2^9131648 is an apocalyptic number.

It is an amenable number.

9131648 is a deficient number, since it is larger than the sum of its proper divisors (9060562).

9131648 is an equidigital number, since it uses as much as digits as its factorization.

9131648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71355 (or 71343 counting only the distinct ones).

The product of its digits is 5184, while the sum is 32.

The square root of 9131648 is about 3021.8616778403. The cubic root of 9131648 is about 209.0176949831.

It can be divided in two parts, 9131 and 648, that added together give a palindrome (9779).

The spelling of 9131648 in words is "nine million, one hundred thirty-one thousand, six hundred forty-eight".