128164573 has 2 divisors, whose sum is σ = 128164574. Its totient is φ = 128164572.

The previous prime is 128164541. The next prime is 128164583. The reversal of 128164573 is 375461821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125484804 + 2679769 = 11202^2 + 1637^2 .

It is a cyclic number.

It is not a de Polignac number, because 128164573 - 2⁵ = 128164541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128164583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64082286 + 64082287.

It is an arithmetic number, because the mean of its divisors is an integer number (64082287).

Almost surely, 2^128164573 is an apocalyptic number.

It is an amenable number.

128164573 is a deficient number, since it is larger than the sum of its proper divisors (1).

128164573 is an equidigital number, since it uses as much as digits as its factorization.

128164573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 37.

The square root of 128164573 is about 11320.9793304290. The cubic root of 128164573 is about 504.1843159847.

The spelling of 128164573 in words is "one hundred twenty-eight million, one hundred sixty-four thousand, five hundred seventy-three".