4431413081 has 4 divisors (see below), whose sum is σ = 4438595892. Its totient is φ = 4424230272.

The previous prime is 4431413053. The next prime is 4431413083. The reversal of 4431413081 is 1803141344.

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 1355712400 + 3075700681 = 36820^2 + 55459^2 .

It is a cyclic number.

It is not a de Polignac number, because 4431413081 - 2³⁰ = 3357671257 is a prime.

It is a super-2 number, since 2×4431413081² = 39274843788915825122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4431413083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3590480 + ... + 3591713.

It is an arithmetic number, because the mean of its divisors is an integer number (1109648973).

Almost surely, 2^4431413081 is an apocalyptic number.

It is an amenable number.

4431413081 is a deficient number, since it is larger than the sum of its proper divisors (7182811).

4431413081 is an equidigital number, since it uses as much as digits as its factorization.

4431413081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7182810.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 4431413081 is about 66568.8596943045. The cubic root of 4431413081 is about 1642.5329045176.

The spelling of 4431413081 in words is "four billion, four hundred thirty-one million, four hundred thirteen thousand, eighty-one".