16189691589 has 32 divisors (see below), whose sum is σ = 25507440000. Its totient is φ = 10119624192.

The previous prime is 16189691579. The next prime is 16189691593. The reversal of 16189691589 is 98519698161.

16189691589 is a `hidden beast` number, since 1 + 618 + 9 + 6 + 9 + 1 + 5 + 8 + 9 = 666.

It is not a de Polignac number, because 16189691589 - 2¹³ = 16189683397 is a prime.

It is a super-2 number, since 2×16189691589² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16189691569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112914 + ... + 212435.

It is an arithmetic number, because the mean of its divisors is an integer number (797107500).

Almost surely, 2^16189691589 is an apocalyptic number.

16189691589 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

16189691589 is a deficient number, since it is larger than the sum of its proper divisors (9317748411).

16189691589 is a wasteful number, since it uses less digits than its factorization.

16189691589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325474 (or 325468 counting only the distinct ones).

The product of its digits is 8398080, while the sum is 63.

The spelling of 16189691589 in words is "sixteen billion, one hundred eighty-nine million, six hundred ninety-one thousand, five hundred eighty-nine".