164307489 has 4 divisors (see below), whose sum is σ = 219076656. Its totient is φ = 109538324.

The previous prime is 164307457. The next prime is 164307503. The reversal of 164307489 is 984703461.

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 164307489 - 2⁵ = 164307457 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 164307489.

It is not an unprimeable number, because it can be changed into a prime (164307449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27384579 + ... + 27384584.

It is an arithmetic number, because the mean of its divisors is an integer number (54769164).

Almost surely, 2^164307489 is an apocalyptic number.

It is an amenable number.

164307489 is a deficient number, since it is larger than the sum of its proper divisors (54769167).

164307489 is an equidigital number, since it uses as much as digits as its factorization.

164307489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54769166.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 164307489 is about 12818.2482812590. The cubic root of 164307489 is about 547.7122481427.

The spelling of 164307489 in words is "one hundred sixty-four million, three hundred seven thousand, four hundred eighty-nine".