298187426021 has 2 divisors, whose sum is σ = 298187426022. Its totient is φ = 298187426020.

The previous prime is 298187426003. The next prime is 298187426023. The reversal of 298187426021 is 120624781892.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 274744753921 + 23442672100 = 524161^2 + 153110^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-298187426021 is a prime.

Together with 298187426023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (298187426023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 149093713010 + 149093713011.

It is an arithmetic number, because the mean of its divisors is an integer number (149093713011).

Almost surely, 2^298187426021 is an apocalyptic number.

It is an amenable number.

298187426021 is a deficient number, since it is larger than the sum of its proper divisors (1).

298187426021 is an equidigital number, since it uses as much as digits as its factorization.

298187426021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 774144, while the sum is 50.

The spelling of 298187426021 in words is "two hundred ninety-eight billion, one hundred eighty-seven million, four hundred twenty-six thousand, twenty-one".