903856857103 has 2 divisors, whose sum is σ = 903856857104. Its totient is φ = 903856857102.

The previous prime is 903856857091. The next prime is 903856857119. The reversal of 903856857103 is 301758658309.

It is a weak prime.

It is an emirp because it is prime and its reverse (301758658309) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-903856857103 is a prime.

It is a super-2 number, since 2×903856857103² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (903856857193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 451928428551 + 451928428552.

It is an arithmetic number, because the mean of its divisors is an integer number (451928428552).

Almost surely, 2^903856857103 is an apocalyptic number.

903856857103 is a deficient number, since it is larger than the sum of its proper divisors (1).

903856857103 is an equidigital number, since it uses as much as digits as its factorization.

903856857103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5443200, while the sum is 55.

The spelling of 903856857103 in words is "nine hundred three billion, eight hundred fifty-six million, eight hundred fifty-seven thousand, one hundred three".