298148021 has 2 divisors, whose sum is σ = 298148022. Its totient is φ = 298148020.

The previous prime is 298148003. The next prime is 298148029. The reversal of 298148021 is 120841892.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 294499921 + 3648100 = 17161^2 + 1910^2 .

It is a cyclic number.

It is not a de Polignac number, because 298148021 - 2¹⁴ = 298131637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (298148029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 149074010 + 149074011.

It is an arithmetic number, because the mean of its divisors is an integer number (149074011).

Almost surely, 2^298148021 is an apocalyptic number.

It is an amenable number.

298148021 is a deficient number, since it is larger than the sum of its proper divisors (1).

298148021 is an equidigital number, since it uses as much as digits as its factorization.

298148021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 298148021 is about 17266.9632825231. The cubic root of 298148021 is about 668.0525770765.

The spelling of 298148021 in words is "two hundred ninety-eight million, one hundred forty-eight thousand, twenty-one".