203446432493 has 2 divisors, whose sum is σ = 203446432494. Its totient is φ = 203446432492.

The previous prime is 203446432489. The next prime is 203446432531. The reversal of 203446432493 is 394234644302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127836281764 + 75610150729 = 357542^2 + 274973^2 .

It is a cyclic number.

It is not a de Polignac number, because 203446432493 - 2² = 203446432489 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203446434493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101723216246 + 101723216247.

It is an arithmetic number, because the mean of its divisors is an integer number (101723216247).

Almost surely, 2^203446432493 is an apocalyptic number.

It is an amenable number.

203446432493 is a deficient number, since it is larger than the sum of its proper divisors (1).

203446432493 is an equidigital number, since it uses as much as digits as its factorization.

203446432493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1492992, while the sum is 44.

The spelling of 203446432493 in words is "two hundred three billion, four hundred forty-six million, four hundred thirty-two thousand, four hundred ninety-three".