8213441305 has 8 divisors (see below), whose sum is σ = 9881469000. Its totient is φ = 6553860096.

The previous prime is 8213441303. The next prime is 8213441311. The reversal of 8213441305 is 5031443128.

It can be written as a sum of positive squares in 4 ways, for example, as 144192064 + 8069249241 = 12008^2 + 89829^2 .

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 8213441305 - 2¹ = 8213441303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8213441303) 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, 2109480 + ... + 2113369.

It is an arithmetic number, because the mean of its divisors is an integer number (1235183625).

Almost surely, 2^8213441305 is an apocalyptic number.

It is an amenable number.

8213441305 is a deficient number, since it is larger than the sum of its proper divisors (1668027695).

8213441305 is a wasteful number, since it uses less digits than its factorization.

8213441305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4223243.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 8213441305 is about 90628.0381835555. The cubic root of 8213441305 is about 2017.6308944852.

It can be divided in two parts, 821344 and 1305, that added together give a square (822649 = 907²).

The spelling of 8213441305 in words is "eight billion, two hundred thirteen million, four hundred forty-one thousand, three hundred five".