338867161 has 2 divisors, whose sum is σ = 338867162. Its totient is φ = 338867160.

The previous prime is 338867159. The next prime is 338867203. The reversal of 338867161 is 161768833.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 287099136 + 51768025 = 16944^2 + 7195^2 .

It is a cyclic number.

It is not a de Polignac number, because 338867161 - 2¹ = 338867159 is a prime.

It is a super-2 number, since 2×338867161² = 229661905608399842, which contains 22 as substring.

Together with 338867159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (338867141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169433580 + 169433581.

It is an arithmetic number, because the mean of its divisors is an integer number (169433581).

Almost surely, 2^338867161 is an apocalyptic number.

It is an amenable number.

338867161 is a deficient number, since it is larger than the sum of its proper divisors (1).

338867161 is an equidigital number, since it uses as much as digits as its factorization.

338867161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 43.

The square root of 338867161 is about 18408.3448739967. The cubic root of 338867161 is about 697.1771768703.

The spelling of 338867161 in words is "three hundred thirty-eight million, eight hundred sixty-seven thousand, one hundred sixty-one".