9128129573 has 2 divisors, whose sum is σ = 9128129574. Its totient is φ = 9128129572.

The previous prime is 9128129567. The next prime is 9128129579. The reversal of 9128129573 is 3759218219.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (9128129567) and next prime (9128129579).

It can be written as a sum of positive squares in only one way, i.e., 8814768769 + 313360804 = 93887^2 + 17702^2 .

It is a cyclic number.

It is not a de Polignac number, because 9128129573 - 2⁶ = 9128129509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9128129579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4564064786 + 4564064787.

It is an arithmetic number, because the mean of its divisors is an integer number (4564064787).

Almost surely, 2^9128129573 is an apocalyptic number.

It is an amenable number.

9128129573 is a deficient number, since it is larger than the sum of its proper divisors (1).

9128129573 is an equidigital number, since it uses as much as digits as its factorization.

9128129573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 47.

The square root of 9128129573 is about 95541.2454021822. The cubic root of 9128129573 is about 2089.9084667223.

The spelling of 9128129573 in words is "nine billion, one hundred twenty-eight million, one hundred twenty-nine thousand, five hundred seventy-three".