8853680821 has 2 divisors, whose sum is σ = 8853680822. Its totient is φ = 8853680820.

The previous prime is 8853680809. The next prime is 8853680863. The reversal of 8853680821 is 1280863588.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8852739921 + 940900 = 94089^2 + 970^2 .

It is a cyclic number.

It is not a de Polignac number, because 8853680821 - 2¹¹ = 8853678773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8853680221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4426840410 + 4426840411.

It is an arithmetic number, because the mean of its divisors is an integer number (4426840411).

Almost surely, 2^8853680821 is an apocalyptic number.

It is an amenable number.

8853680821 is a deficient number, since it is larger than the sum of its proper divisors (1).

8853680821 is an equidigital number, since it uses as much as digits as its factorization.

8853680821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 737280, while the sum is 49.

The square root of 8853680821 is about 94093.9999202925. Note that the first 4 decimals coincide. The cubic root of 8853680821 is about 2068.7497269941.

The spelling of 8853680821 in words is "eight billion, eight hundred fifty-three million, six hundred eighty thousand, eight hundred twenty-one".