164389549 has 8 divisors (see below), whose sum is σ = 166355640. Its totient is φ = 162432000.

The previous prime is 164389529. The next prime is 164389553. The reversal of 164389549 is 945983461.

It is a happy number.

164389549 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 86155524 + 78234025 = 9282^2 + 8845^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 164389549 - 2⁹ = 164389037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164389529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41829 + ... + 45589.

It is an arithmetic number, because the mean of its divisors is an integer number (20794455).

Almost surely, 2^164389549 is an apocalyptic number.

It is an amenable number.

164389549 is a deficient number, since it is larger than the sum of its proper divisors (1966091).

164389549 is a wasteful number, since it uses less digits than its factorization.

164389549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4271.

The product of its digits is 933120, while the sum is 49.

The square root of 164389549 is about 12821.4487870911. The cubic root of 164389549 is about 547.8034141776.

The spelling of 164389549 in words is "one hundred sixty-four million, three hundred eighty-nine thousand, five hundred forty-nine".