203045245493 has 2 divisors, whose sum is σ = 203045245494. Its totient is φ = 203045245492.

The previous prime is 203045245471. The next prime is 203045245567. The reversal of 203045245493 is 394542540302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 154324836964 + 48720408529 = 392842^2 + 220727^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203045245493 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 203045245493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203045245463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101522622746 + 101522622747.

It is an arithmetic number, because the mean of its divisors is an integer number (101522622747).

Almost surely, 2^203045245493 is an apocalyptic number.

It is an amenable number.

203045245493 is a deficient number, since it is larger than the sum of its proper divisors (1).

203045245493 is an equidigital number, since it uses as much as digits as its factorization.

203045245493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 518400, while the sum is 41.

Adding to 203045245493 its reverse (394542540302), we get a palindrome (597587785795).

The spelling of 203045245493 in words is "two hundred three billion, forty-five million, two hundred forty-five thousand, four hundred ninety-three".