164497589 has 4 divisors (see below), whose sum is σ = 166126380. Its totient is φ = 162868800.

The previous prime is 164497577. The next prime is 164497591. The reversal of 164497589 is 985794461.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 88981489 + 75516100 = 9433^2 + 8690^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164497589 is a prime.

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 164497589.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164497519) 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, 814244 + ... + 814445.

It is an arithmetic number, because the mean of its divisors is an integer number (41531595).

Almost surely, 2^164497589 is an apocalyptic number.

It is an amenable number.

164497589 is a deficient number, since it is larger than the sum of its proper divisors (1628791).

164497589 is a wasteful number, since it uses less digits than its factorization.

164497589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1628790.

The product of its digits is 2177280, while the sum is 53.

The square root of 164497589 is about 12825.6613474705. The cubic root of 164497589 is about 547.9233969060.

The spelling of 164497589 in words is "one hundred sixty-four million, four hundred ninety-seven thousand, five hundred eighty-nine".