8169443461 has 4 divisors (see below), whose sum is σ = 8170508992. Its totient is φ = 8168377932.

The previous prime is 8169443459. The next prime is 8169443489. The reversal of 8169443461 is 1643449618.

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: 1643449618 = 2 ⋅821724809.

It is a cyclic number.

It is not a de Polignac number, because 8169443461 - 2¹ = 8169443459 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8169444461) 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, 521181 + ... + 536626.

It is an arithmetic number, because the mean of its divisors is an integer number (2042627248).

Almost surely, 2^8169443461 is an apocalyptic number.

It is an amenable number.

8169443461 is a deficient number, since it is larger than the sum of its proper divisors (1065531).

8169443461 is a wasteful number, since it uses less digits than its factorization.

8169443461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065530.

The product of its digits is 497664, while the sum is 46.

The square root of 8169443461 is about 90384.9736460657. The cubic root of 8169443461 is about 2014.0217538913.

The spelling of 8169443461 in words is "eight billion, one hundred sixty-nine million, four hundred forty-three thousand, four hundred sixty-one".