3505420813 has 2 divisors, whose sum is σ = 3505420814. Its totient is φ = 3505420812.

The previous prime is 3505420739. The next prime is 3505420819. The reversal of 3505420813 is 3180245053.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3438884164 + 66536649 = 58642^2 + 8157^2 .

It is a cyclic number.

It is not a de Polignac number, because 3505420813 - 2¹⁷ = 3505289741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3505420819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1752710406 + 1752710407.

It is an arithmetic number, because the mean of its divisors is an integer number (1752710407).

Almost surely, 2^3505420813 is an apocalyptic number.

It is an amenable number.

3505420813 is a deficient number, since it is larger than the sum of its proper divisors (1).

3505420813 is an equidigital number, since it uses as much as digits as its factorization.

3505420813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 3505420813 is about 59206.5943371176. The cubic root of 3505420813 is about 1519.0779283238.

Adding to 3505420813 its reverse (3180245053), we get a palindrome (6685665866).

The spelling of 3505420813 in words is "three billion, five hundred five million, four hundred twenty thousand, eight hundred thirteen".