9064641891 has 16 divisors (see below), whose sum is σ = 12262105088. Its totient is φ = 5955768000.

The previous prime is 9064641871. The next prime is 9064641913. The reversal of 9064641891 is 1981464609.

9064641891 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 9064641891 - 2⁶ = 9064641827 is a prime.

It is a super-2 number, since 2×9064641891² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9064641891.

It is not an unprimeable number, because it can be changed into a prime (9064641851) 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 15 ways as a sum of consecutive naturals, for example, 21250 + ... + 136311.

It is an arithmetic number, because the mean of its divisors is an integer number (766381568).

Almost surely, 2^9064641891 is an apocalyptic number.

9064641891 is a deficient number, since it is larger than the sum of its proper divisors (3197463197).

9064641891 is a wasteful number, since it uses less digits than its factorization.

9064641891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157842.

The product of its (nonzero) digits is 373248, while the sum is 48.

The square root of 9064641891 is about 95208.4129213380. The cubic root of 9064641891 is about 2085.0519679495.

The spelling of 9064641891 in words is "nine billion, sixty-four million, six hundred forty-one thousand, eight hundred ninety-one".