853665103 has 2 divisors, whose sum is σ = 853665104. Its totient is φ = 853665102.

The previous prime is 853665097. The next prime is 853665143. The reversal of 853665103 is 301566358.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-853665103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (853665143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 426832551 + 426832552.

It is an arithmetic number, because the mean of its divisors is an integer number (426832552).

Almost surely, 2^853665103 is an apocalyptic number.

853665103 is a deficient number, since it is larger than the sum of its proper divisors (1).

853665103 is an equidigital number, since it uses as much as digits as its factorization.

853665103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 853665103 is about 29217.5478608319. The cubic root of 853665103 is about 948.6277891562.

The spelling of 853665103 in words is "eight hundred fifty-three million, six hundred sixty-five thousand, one hundred three".