298893530821 has 2 divisors, whose sum is σ = 298893530822. Its totient is φ = 298893530820.

The previous prime is 298893530753. The next prime is 298893530827. The reversal of 298893530821 is 128035398892.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 293839884900 + 5053645921 = 542070^2 + 71089^2 .

It is a cyclic number.

It is not a de Polignac number, because 298893530821 - 2¹⁵ = 298893498053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (298893530827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 149446765410 + 149446765411.

It is an arithmetic number, because the mean of its divisors is an integer number (149446765411).

Almost surely, 2^298893530821 is an apocalyptic number.

It is an amenable number.

298893530821 is a deficient number, since it is larger than the sum of its proper divisors (1).

298893530821 is an equidigital number, since it uses as much as digits as its factorization.

298893530821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7464960, while the sum is 58.

The spelling of 298893530821 in words is "two hundred ninety-eight billion, eight hundred ninety-three million, five hundred thirty thousand, eight hundred twenty-one".