980820853 has 2 divisors, whose sum is σ = 980820854. Its totient is φ = 980820852.

The previous prime is 980820847. The next prime is 980820871. The reversal of 980820853 is 358028089.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 968018769 + 12802084 = 31113^2 + 3578^2 .

It is an emirp because it is prime and its reverse (358028089) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 980820853 - 2⁵ = 980820821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (980820833) 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 as a sum of consecutive naturals, namely, 490410426 + 490410427.

It is an arithmetic number, because the mean of its divisors is an integer number (490410427).

Almost surely, 2^980820853 is an apocalyptic number.

It is an amenable number.

980820853 is a deficient number, since it is larger than the sum of its proper divisors (1).

980820853 is an equidigital number, since it uses as much as digits as its factorization.

980820853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 980820853 is about 31318.0595343964. The cubic root of 980820853 is about 993.5656387922.

The spelling of 980820853 in words is "nine hundred eighty million, eight hundred twenty thousand, eight hundred fifty-three".