381766241 has 2 divisors, whose sum is σ = 381766242. Its totient is φ = 381766240.

The previous prime is 381766223. The next prime is 381766247. The reversal of 381766241 is 142667183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 381381841 + 384400 = 19529^2 + 620^2 .

It is a cyclic number.

It is not a de Polignac number, because 381766241 - 2¹⁴ = 381749857 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 381766195 and 381766204.

It is not a weakly prime, because it can be changed into another prime (381766247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190883120 + 190883121.

It is an arithmetic number, because the mean of its divisors is an integer number (190883121).

Almost surely, 2^381766241 is an apocalyptic number.

It is an amenable number.

381766241 is a deficient number, since it is larger than the sum of its proper divisors (1).

381766241 is an equidigital number, since it uses as much as digits as its factorization.

381766241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 38.

The square root of 381766241 is about 19538.8392951066. The cubic root of 381766241 is about 725.4361171532.

The spelling of 381766241 in words is "three hundred eighty-one million, seven hundred sixty-six thousand, two hundred forty-one".