9291451968 has 42 divisors (see below), whose sum is σ = 26632271094. Its totient is φ = 3097150464.

The previous prime is 9291451963. The next prime is 9291451969. The reversal of 9291451968 is 8691541929.

It can be written as a sum of positive squares in only one way, i.e., 8108642304 + 1182809664 = 90048^2 + 34392^2 .

It is not an unprimeable number, because it can be changed into a prime (9291451963) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8064921 + ... + 8066072.

Almost surely, 2^9291451968 is an apocalyptic number.

It is an amenable number.

9291451968 is an abundant number, since it is smaller than the sum of its proper divisors (17340819126).

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

9291451968 is a wasteful number, since it uses less digits than its factorization.

9291451968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16131011 (or 16130998 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 54.

The square root of 9291451968 is about 96392.1779399138. The cubic root of 9291451968 is about 2102.2992178012.

The spelling of 9291451968 in words is "nine billion, two hundred ninety-one million, four hundred fifty-one thousand, nine hundred sixty-eight".