298920161 has 2 divisors, whose sum is σ = 298920162. Its totient is φ = 298920160.

The previous prime is 298920131. The next prime is 298920169. The reversal of 298920161 is 161029892.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199798225 + 99121936 = 14135^2 + 9956^2 .

It is a cyclic number.

It is not a de Polignac number, because 298920161 - 2¹⁴ = 298903777 is a prime.

It is not a weakly prime, because it can be changed into another prime (298920169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 149460080 + 149460081.

It is an arithmetic number, because the mean of its divisors is an integer number (149460081).

Almost surely, 2^298920161 is an apocalyptic number.

It is an amenable number.

298920161 is a deficient number, since it is larger than the sum of its proper divisors (1).

298920161 is an equidigital number, since it uses as much as digits as its factorization.

298920161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 298920161 is about 17289.3077073664. The cubic root of 298920161 is about 668.6287846684.

The spelling of 298920161 in words is "two hundred ninety-eight million, nine hundred twenty thousand, one hundred sixty-one".