4431236161 has 8 divisors (see below), whose sum is σ = 4835476800. Its totient is φ = 4027229040.

The previous prime is 4431236149. The next prime is 4431236177. The reversal of 4431236161 is 1616321344.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4431236161 - 2⁹ = 4431235649 is a prime.

It is a super-3 number, since 3×4431236161³ (a number of 30 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (4431236101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17446 + ... + 95743.

It is an arithmetic number, because the mean of its divisors is an integer number (604434600).

Almost surely, 2^4431236161 is an apocalyptic number.

It is an amenable number.

4431236161 is a deficient number, since it is larger than the sum of its proper divisors (404240639).

4431236161 is a wasteful number, since it uses less digits than its factorization.

4431236161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116759.

The product of its digits is 10368, while the sum is 31.

The square root of 4431236161 is about 66567.5308314797. The cubic root of 4431236161 is about 1642.5110453662.

The spelling of 4431236161 in words is "four billion, four hundred thirty-one million, two hundred thirty-six thousand, one hundred sixty-one".