4165228281 has 4 divisors (see below), whose sum is σ = 5553637712. Its totient is φ = 2776818852.

The previous prime is 4165228267. The next prime is 4165228307. The reversal of 4165228281 is 1828225614.

It is a happy number.

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.

It is not a de Polignac number, because 4165228281 - 2⁹ = 4165227769 is a prime.

It is a super-2 number, since 2×4165228281² = 34698253265684429922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4165228261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 694204711 + ... + 694204716.

It is an arithmetic number, because the mean of its divisors is an integer number (1388409428).

Almost surely, 2^4165228281 is an apocalyptic number.

It is an amenable number.

4165228281 is a deficient number, since it is larger than the sum of its proper divisors (1388409431).

4165228281 is a wasteful number, since it uses less digits than its factorization.

4165228281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388409430.

The product of its digits is 61440, while the sum is 39.

The square root of 4165228281 is about 64538.5797875968. The cubic root of 4165228281 is about 1608.9637868858.

The spelling of 4165228281 in words is "four billion, one hundred sixty-five million, two hundred twenty-eight thousand, two hundred eighty-one".