338950561 has 2 divisors, whose sum is σ = 338950562. Its totient is φ = 338950560.

The previous prime is 338950541. The next prime is 338950571. The reversal of 338950561 is 165059833.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 217267600 + 121682961 = 14740^2 + 11031^2 .

It is an emirp because it is prime and its reverse (165059833) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 338950561 - 2⁹ = 338950049 is a prime.

It is a super-2 number, since 2×338950561² = 229774965604429442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (338950501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169475280 + 169475281.

It is an arithmetic number, because the mean of its divisors is an integer number (169475281).

Almost surely, 2^338950561 is an apocalyptic number.

It is an amenable number.

338950561 is a deficient number, since it is larger than the sum of its proper divisors (1).

338950561 is an equidigital number, since it uses as much as digits as its factorization.

338950561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 338950561 is about 18410.6100116210. The cubic root of 338950561 is about 697.2343672326.

The spelling of 338950561 in words is "three hundred thirty-eight million, nine hundred fifty thousand, five hundred sixty-one".