338681933 has 2 divisors, whose sum is σ = 338681934. Its totient is φ = 338681932.

The previous prime is 338681911. The next prime is 338681989. The reversal of 338681933 is 339186833.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 338449609 + 232324 = 18397^2 + 482^2 .

It is a cyclic number.

It is not a de Polignac number, because 338681933 - 2¹⁸ = 338419789 is a prime.

It is a super-2 number, since 2×338681933² = 229410903481232978, which contains 22 as substring.

It is a Sophie Germain 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 (338687933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169340966 + 169340967.

It is an arithmetic number, because the mean of its divisors is an integer number (169340967).

Almost surely, 2^338681933 is an apocalyptic number.

It is an amenable number.

338681933 is a deficient number, since it is larger than the sum of its proper divisors (1).

338681933 is an equidigital number, since it uses as much as digits as its factorization.

338681933 is an evil number, because the sum of its binary digits is even.

The product of its digits is 279936, while the sum is 44.

The square root of 338681933 is about 18403.3130984614. The cubic root of 338681933 is about 697.0501258355.

The spelling of 338681933 in words is "three hundred thirty-eight million, six hundred eighty-one thousand, nine hundred thirty-three".