38381969 has 2 divisors, whose sum is σ = 38381970. Its totient is φ = 38381968.

The previous prime is 38381933. The next prime is 38381977. The reversal of 38381969 is 96918383.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37761025 + 620944 = 6145^2 + 788^2 .

It is a cyclic number.

It is not a de Polignac number, because 38381969 - 2⁸ = 38381713 is a prime.

It is a super-2 number, since 2×38381969² = 2946351088633922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (38381909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19190984 + 19190985.

It is an arithmetic number, because the mean of its divisors is an integer number (19190985).

Almost surely, 2^38381969 is an apocalyptic number.

It is an amenable number.

38381969 is a deficient number, since it is larger than the sum of its proper divisors (1).

38381969 is an equidigital number, since it uses as much as digits as its factorization.

38381969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 47.

The square root of 38381969 is about 6195.3183130490. The cubic root of 38381969 is about 337.3202525258.

The spelling of 38381969 in words is "thirty-eight million, three hundred eighty-one thousand, nine hundred sixty-nine".