853128923 has 2 divisors, whose sum is σ = 853128924. Its totient is φ = 853128922.

The previous prime is 853128919. The next prime is 853128929. The reversal of 853128923 is 329821358.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 853128923 - 2² = 853128919 is a prime.

It is not a weakly prime, because it can be changed into another prime (853128929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 426564461 + 426564462.

It is an arithmetic number, because the mean of its divisors is an integer number (426564462).

Almost surely, 2^853128923 is an apocalyptic number.

853128923 is a deficient number, since it is larger than the sum of its proper divisors (1).

853128923 is an equidigital number, since it uses as much as digits as its factorization.

853128923 is an odious number, because the sum of its binary digits is odd.

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

The square root of 853128923 is about 29208.3707693531. The cubic root of 853128923 is about 948.4291391340.

The spelling of 853128923 in words is "eight hundred fifty-three million, one hundred twenty-eight thousand, nine hundred twenty-three".