3505947161 has 2 divisors, whose sum is σ = 3505947162. Its totient is φ = 3505947160.

The previous prime is 3505947149. The next prime is 3505947227. The reversal of 3505947161 is 1617495053.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3237610000 + 268337161 = 56900^2 + 16381^2 .

It is a cyclic number.

It is not a de Polignac number, because 3505947161 - 2¹⁸ = 3505685017 is a prime.

It is not a weakly prime, because it can be changed into another prime (3505947101) 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, 1752973580 + 1752973581.

It is an arithmetic number, because the mean of its divisors is an integer number (1752973581).

Almost surely, 2^3505947161 is an apocalyptic number.

It is an amenable number.

3505947161 is a deficient number, since it is larger than the sum of its proper divisors (1).

3505947161 is an equidigital number, since it uses as much as digits as its factorization.

3505947161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 113400, while the sum is 41.

The square root of 3505947161 is about 59211.0391818958. The cubic root of 3505947161 is about 1519.1539556785.

The spelling of 3505947161 in words is "three billion, five hundred five million, nine hundred forty-seven thousand, one hundred sixty-one".