164506289 has 2 divisors, whose sum is σ = 164506290. Its totient is φ = 164506288.

The previous prime is 164506273. The next prime is 164506291. The reversal of 164506289 is 982605461.

It is a happy number.

164506289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 143041600 + 21464689 = 11960^2 + 4633^2 .

It is a cyclic number.

It is not a de Polignac number, because 164506289 - 2⁴ = 164506273 is a prime.

Together with 164506291, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (164536289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82253144 + 82253145.

It is an arithmetic number, because the mean of its divisors is an integer number (82253145).

Almost surely, 2^164506289 is an apocalyptic number.

It is an amenable number.

164506289 is a deficient number, since it is larger than the sum of its proper divisors (1).

164506289 is an equidigital number, since it uses as much as digits as its factorization.

164506289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 164506289 is about 12826.0005067831. Note that the first 3 decimals coincide. The cubic root of 164506289 is about 547.9330563171.

The spelling of 164506289 in words is "one hundred sixty-four million, five hundred six thousand, two hundred eighty-nine".