9547991264 has 48 divisors (see below), whose sum is σ = 22613673600. Its totient is φ = 3876626304.

The previous prime is 9547991263. The next prime is 9547991281. The reversal of 9547991264 is 4621997459.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9547991263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1117454 + ... + 1125965.

It is an arithmetic number, because the mean of its divisors is an integer number (471118200).

Almost surely, 2^9547991264 is an apocalyptic number.

It is an amenable number.

9547991264 is an abundant number, since it is smaller than the sum of its proper divisors (13065682336).

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

9547991264 is a wasteful number, since it uses less digits than its factorization.

9547991264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2243455 (or 2243447 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 56.

The square root of 9547991264 is about 97713.8233004932. The cubic root of 9547991264 is about 2121.4721636554.

The spelling of 9547991264 in words is "nine billion, five hundred forty-seven million, nine hundred ninety-one thousand, two hundred sixty-four".