982203517921 has 2 divisors, whose sum is σ = 982203517922. Its totient is φ = 982203517920.

The previous prime is 982203517877. The next prime is 982203517987. The reversal of 982203517921 is 129715302289.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 624240627921 + 357962890000 = 790089^2 + 598300^2 .

It is a cyclic number.

It is not a de Polignac number, because 982203517921 - 2⁹ = 982203517409 is a prime.

It is not a weakly prime, because it can be changed into another prime (982203517121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 491101758960 + 491101758961.

It is an arithmetic number, because the mean of its divisors is an integer number (491101758961).

Almost surely, 2^982203517921 is an apocalyptic number.

It is an amenable number.

982203517921 is a deficient number, since it is larger than the sum of its proper divisors (1).

982203517921 is an equidigital number, since it uses as much as digits as its factorization.

982203517921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 49.

The spelling of 982203517921 in words is "nine hundred eighty-two billion, two hundred three million, five hundred seventeen thousand, nine hundred twenty-one".