503436946949 has 2 divisors, whose sum is σ = 503436946950. Its totient is φ = 503436946948.

The previous prime is 503436946913. The next prime is 503436946951. The reversal of 503436946949 is 949649634305.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 385113330625 + 118323616324 = 620575^2 + 343982^2 .

It is a cyclic number.

It is not a de Polignac number, because 503436946949 - 2¹⁶ = 503436881413 is a prime.

Together with 503436946951, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 503436946891 and 503436946900.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (503436946979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251718473474 + 251718473475.

It is an arithmetic number, because the mean of its divisors is an integer number (251718473475).

Almost surely, 2^503436946949 is an apocalyptic number.

It is an amenable number.

503436946949 is a deficient number, since it is larger than the sum of its proper divisors (1).

503436946949 is an equidigital number, since it uses as much as digits as its factorization.

503436946949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75582720, while the sum is 62.

The spelling of 503436946949 in words is "five hundred three billion, four hundred thirty-six million, nine hundred forty-six thousand, nine hundred forty-nine".