4363644161 has 4 divisors (see below), whose sum is σ = 4363976532. Its totient is φ = 4363311792.

The previous prime is 4363644151. The next prime is 4363644179. The reversal of 4363644161 is 1614463634.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2505603136 + 1858041025 = 50056^2 + 43105^2 .

It is a cyclic number.

It is not a de Polignac number, because 4363644161 - 2¹⁴ = 4363627777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4363644121) 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 in 3 ways as a sum of consecutive naturals, for example, 145646 + ... + 173031.

It is an arithmetic number, because the mean of its divisors is an integer number (1090994133).

Almost surely, 2^4363644161 is an apocalyptic number.

It is an amenable number.

4363644161 is a deficient number, since it is larger than the sum of its proper divisors (332371).

4363644161 is a wasteful number, since it uses less digits than its factorization.

4363644161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332370.

The product of its digits is 124416, while the sum is 38.

The square root of 4363644161 is about 66057.8849267822. The cubic root of 4363644161 is about 1634.1168546175.

The spelling of 4363644161 in words is "four billion, three hundred sixty-three million, six hundred forty-four thousand, one hundred sixty-one".