201003493 has 2 divisors, whose sum is σ = 201003494. Its totient is φ = 201003492.

The previous prime is 201003487. The next prime is 201003511. The reversal of 201003493 is 394300102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 152324964 + 48678529 = 12342^2 + 6977^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201003493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201003403) 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, 100501746 + 100501747.

It is an arithmetic number, because the mean of its divisors is an integer number (100501747).

Almost surely, 2^201003493 is an apocalyptic number.

It is an amenable number.

201003493 is a deficient number, since it is larger than the sum of its proper divisors (1).

201003493 is an equidigital number, since it uses as much as digits as its factorization.

201003493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 201003493 is about 14177.5700668344. The cubic root of 201003493 is about 585.7799934754.

Adding to 201003493 its reverse (394300102), we get a palindrome (595303595).

The spelling of 201003493 in words is "two hundred one million, three thousand, four hundred ninety-three".