16485589 has 2 divisors, whose sum is σ = 16485590. Its totient is φ = 16485588.

The previous prime is 16485587. The next prime is 16485607. The reversal of 16485589 is 98558461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16467364 + 18225 = 4058^2 + 135^2 .

It is a cyclic number.

It is not a de Polignac number, because 16485589 - 2¹ = 16485587 is a prime.

Together with 16485587, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16485587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8242794 + 8242795.

It is an arithmetic number, because the mean of its divisors is an integer number (8242795).

Almost surely, 2^16485589 is an apocalyptic number.

It is an amenable number.

16485589 is a deficient number, since it is larger than the sum of its proper divisors (1).

16485589 is an equidigital number, since it uses as much as digits as its factorization.

16485589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 345600, while the sum is 46.

The square root of 16485589 is about 4060.2449433501. The cubic root of 16485589 is about 254.5080300538.

It can be divided in two parts, 16 and 485589, that added together give a triangular number (485605 = T₉₈₅).

The spelling of 16485589 in words is "sixteen million, four hundred eighty-five thousand, five hundred eighty-nine".