403126380493 has 2 divisors, whose sum is σ = 403126380494. Its totient is φ = 403126380492.

The previous prime is 403126380491. The next prime is 403126380511. The reversal of 403126380493 is 394083621304.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 338355112489 + 64771268004 = 581683^2 + 254502^2 .

It is a cyclic number.

It is not a de Polignac number, because 403126380493 - 2¹ = 403126380491 is a prime.

Together with 403126380491, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (403126380491) 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, 201563190246 + 201563190247.

It is an arithmetic number, because the mean of its divisors is an integer number (201563190247).

Almost surely, 2^403126380493 is an apocalyptic number.

It is an amenable number.

403126380493 is a deficient number, since it is larger than the sum of its proper divisors (1).

403126380493 is an equidigital number, since it uses as much as digits as its factorization.

403126380493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 43.

The spelling of 403126380493 in words is "four hundred three billion, one hundred twenty-six million, three hundred eighty thousand, four hundred ninety-three".