338498161 has 2 divisors, whose sum is σ = 338498162. Its totient is φ = 338498160.

The previous prime is 338498159. The next prime is 338498177. The reversal of 338498161 is 161894833.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 321843600 + 16654561 = 17940^2 + 4081^2 .

It is an emirp because it is prime and its reverse (161894833) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 338498161 - 2¹ = 338498159 is a prime.

It is a super-2 number, since 2×338498161² = 229162010000763842, which contains 22 as substring.

Together with 338498159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (338498131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169249080 + 169249081.

It is an arithmetic number, because the mean of its divisors is an integer number (169249081).

Almost surely, 2^338498161 is an apocalyptic number.

It is an amenable number.

338498161 is a deficient number, since it is larger than the sum of its proper divisors (1).

338498161 is an equidigital number, since it uses as much as digits as its factorization.

338498161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 43.

The square root of 338498161 is about 18398.3195156514. The cubic root of 338498161 is about 696.9240277089.

The spelling of 338498161 in words is "three hundred thirty-eight million, four hundred ninety-eight thousand, one hundred sixty-one".