164273689 has 2 divisors, whose sum is σ = 164273690. Its totient is φ = 164273688.

The previous prime is 164273663. The next prime is 164273693. The reversal of 164273689 is 986372461.

164273689 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., 89624089 + 74649600 = 9467^2 + 8640^2 .

It is a cyclic number.

It is not a de Polignac number, because 164273689 - 2⁵ = 164273657 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (164273489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82136844 + 82136845.

It is an arithmetic number, because the mean of its divisors is an integer number (82136845).

Almost surely, 2^164273689 is an apocalyptic number.

It is an amenable number.

164273689 is a deficient number, since it is larger than the sum of its proper divisors (1).

164273689 is an equidigital number, since it uses as much as digits as its factorization.

164273689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 46.

The square root of 164273689 is about 12816.9297805676. The cubic root of 164273689 is about 547.6746885978.

The spelling of 164273689 in words is "one hundred sixty-four million, two hundred seventy-three thousand, six hundred eighty-nine".