10001903 has 2 divisors, whose sum is σ = 10001904. Its totient is φ = 10001902.

The previous prime is 10001891. The next prime is 10001921. The reversal of 10001903 is 30910001.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10001903 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10001963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000951 + 5000952.

It is an arithmetic number, because the mean of its divisors is an integer number (5000952).

Almost surely, 2^10001903 is an apocalyptic number.

10001903 is a deficient number, since it is larger than the sum of its proper divisors (1).

10001903 is an equidigital number, since it uses as much as digits as its factorization.

10001903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27, while the sum is 14.

The square root of 10001903 is about 3162.5785365742. The cubic root of 10001903 is about 215.4571344338.

Adding to 10001903 its reverse (30910001), we get a palindrome (40911904).

The spelling of 10001903 in words is "ten million, one thousand, nine hundred three".