338930381 has 2 divisors, whose sum is σ = 338930382. Its totient is φ = 338930380.

The previous prime is 338930363. The next prime is 338930401. The reversal of 338930381 is 183039833.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 251507881 + 87422500 = 15859^2 + 9350^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-338930381 is a prime.

It is a super-2 number, since 2×338930381² = 229747606329610322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (338930881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169465190 + 169465191.

It is an arithmetic number, because the mean of its divisors is an integer number (169465191).

Almost surely, 2^338930381 is an apocalyptic number.

It is an amenable number.

338930381 is a deficient number, since it is larger than the sum of its proper divisors (1).

338930381 is an equidigital number, since it uses as much as digits as its factorization.

338930381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 338930381 is about 18410.0619499229. The cubic root of 338930381 is about 697.2205299454.

The spelling of 338930381 in words is "three hundred thirty-eight million, nine hundred thirty thousand, three hundred eighty-one".