164589049 has 4 divisors (see below), whose sum is σ = 165442036. Its totient is φ = 163736064.

The previous prime is 164589017. The next prime is 164589071. The reversal of 164589049 is 940985461.

It is a happy number.

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 23454649 + 141134400 = 4843^2 + 11880^2 .

It is a cyclic number.

It is not a de Polignac number, because 164589049 - 2⁵ = 164589017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164589349) 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 3 ways as a sum of consecutive naturals, for example, 426204 + ... + 426589.

It is an arithmetic number, because the mean of its divisors is an integer number (41360509).

Almost surely, 2^164589049 is an apocalyptic number.

It is an amenable number.

164589049 is a deficient number, since it is larger than the sum of its proper divisors (852987).

164589049 is an equidigital number, since it uses as much as digits as its factorization.

164589049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852986.

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 164589049 is about 12829.2263601513. The cubic root of 164589049 is about 548.0249258291.

The spelling of 164589049 in words is "one hundred sixty-four million, five hundred eighty-nine thousand, forty-nine".