4143785161 has 4 divisors (see below), whose sum is σ = 4144042000. Its totient is φ = 4143528324.

The previous prime is 4143785153. The next prime is 4143785197. The reversal of 4143785161 is 1615873414.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1615873414 = 2 ⋅807936707.

It is a cyclic number.

It is not a de Polignac number, because 4143785161 - 2³ = 4143785153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4143780161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102471 + ... + 137068.

It is an arithmetic number, because the mean of its divisors is an integer number (1036010500).

Almost surely, 2^4143785161 is an apocalyptic number.

It is an amenable number.

4143785161 is a deficient number, since it is larger than the sum of its proper divisors (256839).

4143785161 is a wasteful number, since it uses less digits than its factorization.

4143785161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256838.

The product of its digits is 80640, while the sum is 40.

The square root of 4143785161 is about 64372.2390553568. The cubic root of 4143785161 is about 1606.1979857775.

The spelling of 4143785161 in words is "four billion, one hundred forty-three million, seven hundred eighty-five thousand, one hundred sixty-one".