16589481 has 4 divisors (see below), whose sum is σ = 22119312. Its totient is φ = 11059652.

The previous prime is 16589471. The next prime is 16589483. The reversal of 16589481 is 18498561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16589481 - 2¹⁰ = 16588457 is a prime.

It is a super-2 number, since 2×16589481² = 550421759698722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16589483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2764911 + ... + 2764916.

It is an arithmetic number, because the mean of its divisors is an integer number (5529828).

Almost surely, 2^16589481 is an apocalyptic number.

It is an amenable number.

16589481 is a deficient number, since it is larger than the sum of its proper divisors (5529831).

16589481 is an equidigital number, since it uses as much as digits as its factorization.

16589481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5529830.

The product of its digits is 69120, while the sum is 42.

The square root of 16589481 is about 4073.0186594220. The cubic root of 16589481 is about 255.0415464793.

The spelling of 16589481 in words is "sixteen million, five hundred eighty-nine thousand, four hundred eighty-one".