9427164561 has 8 divisors (see below), whose sum is σ = 13966169760. Its totient is φ = 6284776356.

The previous prime is 9427164559. The next prime is 9427164569. The reversal of 9427164561 is 1654617249.

9427164561 is a `hidden beast` number, since 9 + 4 + 27 + 1 + 64 + 561 = 666.

9427164561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9427164561 - 2¹ = 9427164559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9427164569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174577095 + ... + 174577148.

It is an arithmetic number, because the mean of its divisors is an integer number (1745771220).

Almost surely, 2^9427164561 is an apocalyptic number.

It is an amenable number.

9427164561 is a deficient number, since it is larger than the sum of its proper divisors (4539005199).

9427164561 is a wasteful number, since it uses less digits than its factorization.

9427164561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349154252 (or 349154246 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 9427164561 is about 97093.5866110630. The cubic root of 9427164561 is about 2112.4853025879.

The spelling of 9427164561 in words is "nine billion, four hundred twenty-seven million, one hundred sixty-four thousand, five hundred sixty-one".