1403420813 has 2 divisors, whose sum is σ = 1403420814. Its totient is φ = 1403420812.

The previous prime is 1403420743. The next prime is 1403420819. The reversal of 1403420813 is 3180243041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 923065924 + 480354889 = 30382^2 + 21917^2 .

It is a cyclic number.

It is not a de Polignac number, because 1403420813 - 2¹⁰ = 1403419789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1403420819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 701710406 + 701710407.

It is an arithmetic number, because the mean of its divisors is an integer number (701710407).

Almost surely, 2^1403420813 is an apocalyptic number.

It is an amenable number.

1403420813 is a deficient number, since it is larger than the sum of its proper divisors (1).

1403420813 is an equidigital number, since it uses as much as digits as its factorization.

1403420813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 1403420813 is about 37462.2585144035. The cubic root of 1403420813 is about 1119.5993499457.

Adding to 1403420813 its reverse (3180243041), we get a palindrome (4583663854).

The spelling of 1403420813 in words is "one billion, four hundred three million, four hundred twenty thousand, eight hundred thirteen".