16464491589 has 16 divisors (see below), whose sum is σ = 27018653312. Its totient is φ = 8684566848.

The previous prime is 16464491569. The next prime is 16464491621. The reversal of 16464491589 is 98519446461.

16464491589 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 16464491589 - 2¹¹ = 16464489541 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16464491569) 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, 30154474 + ... + 30155019.

It is an arithmetic number, because the mean of its divisors is an integer number (1688665832).

Almost surely, 2^16464491589 is an apocalyptic number.

It is an amenable number.

16464491589 is a deficient number, since it is larger than the sum of its proper divisors (10554161723).

16464491589 is a wasteful number, since it uses less digits than its factorization.

16464491589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60309516.

The product of its digits is 7464960, while the sum is 57.

It can be divided in two parts, 16464 and 491589, that multiplied together give a square (8093521296 = 89964²).

The spelling of 16464491589 in words is "sixteen billion, four hundred sixty-four million, four hundred ninety-one thousand, five hundred eighty-nine".