4143934661 has 2 divisors, whose sum is σ = 4143934662. Its totient is φ = 4143934660.

The previous prime is 4143934589. The next prime is 4143934673. The reversal of 4143934661 is 1664393414.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4135261636 + 8673025 = 64306^2 + 2945^2 .

It is a cyclic number.

It is not a de Polignac number, because 4143934661 - 2¹⁸ = 4143672517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4143934061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2071967330 + 2071967331.

It is an arithmetic number, because the mean of its divisors is an integer number (2071967331).

Almost surely, 2^4143934661 is an apocalyptic number.

It is an amenable number.

4143934661 is a deficient number, since it is larger than the sum of its proper divisors (1).

4143934661 is an equidigital number, since it uses as much as digits as its factorization.

4143934661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 41.

The square root of 4143934661 is about 64373.4002597346. The cubic root of 4143934661 is about 1606.2173017492.

The spelling of 4143934661 in words is "four billion, one hundred forty-three million, nine hundred thirty-four thousand, six hundred sixty-one".