381969017 has 2 divisors, whose sum is σ = 381969018. Its totient is φ = 381969016.

The previous prime is 381968969. The next prime is 381969037. The reversal of 381969017 is 710969183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 381850681 + 118336 = 19541^2 + 344^2 .

It is a cyclic number.

It is not a de Polignac number, because 381969017 - 2¹⁴ = 381952633 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (381969037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190984508 + 190984509.

It is an arithmetic number, because the mean of its divisors is an integer number (190984509).

Almost surely, 2^381969017 is an apocalyptic number.

It is an amenable number.

381969017 is a deficient number, since it is larger than the sum of its proper divisors (1).

381969017 is an equidigital number, since it uses as much as digits as its factorization.

381969017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 381969017 is about 19544.0276555269. The cubic root of 381969017 is about 725.5645334297.

The spelling of 381969017 in words is "three hundred eighty-one million, nine hundred sixty-nine thousand, seventeen".