8220513853 has 2 divisors, whose sum is σ = 8220513854. Its totient is φ = 8220513852.

The previous prime is 8220513841. The next prime is 8220513871. The reversal of 8220513853 is 3583150228.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6201090009 + 2019423844 = 78747^2 + 44938^2 .

It is a cyclic number.

It is not a de Polignac number, because 8220513853 - 2¹³ = 8220505661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8220513883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4110256926 + 4110256927.

It is an arithmetic number, because the mean of its divisors is an integer number (4110256927).

Almost surely, 2^8220513853 is an apocalyptic number.

It is an amenable number.

8220513853 is a deficient number, since it is larger than the sum of its proper divisors (1).

8220513853 is an equidigital number, since it uses as much as digits as its factorization.

8220513853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 8220513853 is about 90667.0494336283. The cubic root of 8220513853 is about 2018.2098518672.

The spelling of 8220513853 in words is "eight billion, two hundred twenty million, five hundred thirteen thousand, eight hundred fifty-three".