8204951213 has 4 divisors (see below), whose sum is σ = 8687595420. Its totient is φ = 7722307008.

The previous prime is 8204951189. The next prime is 8204951231. The reversal of 8204951213 is 3121594028.

8204951213 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 2474764009 + 5730187204 = 49747^2 + 75698^2 .

It is a cyclic number.

It is not a de Polignac number, because 8204951213 - 2¹⁸ = 8204689069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8204951233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241322078 + ... + 241322111.

It is an arithmetic number, because the mean of its divisors is an integer number (2171898855).

Almost surely, 2^8204951213 is an apocalyptic number.

It is an amenable number.

8204951213 is a deficient number, since it is larger than the sum of its proper divisors (482644207).

8204951213 is a wasteful number, since it uses less digits than its factorization.

8204951213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482644206.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 8204951213 is about 90581.1857562044. The cubic root of 8204951213 is about 2016.9354581081.

The spelling of 8204951213 in words is "eight billion, two hundred four million, nine hundred fifty-one thousand, two hundred thirteen".