381366941 has 2 divisors, whose sum is σ = 381366942. Its totient is φ = 381366940.

The previous prime is 381366919. The next prime is 381366943. The reversal of 381366941 is 149663183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 377486041 + 3880900 = 19429^2 + 1970^2 .

It is a cyclic number.

It is not a de Polignac number, because 381366941 - 2⁶ = 381366877 is a prime.

Together with 381366943, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381366943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190683470 + 190683471.

It is an arithmetic number, because the mean of its divisors is an integer number (190683471).

Almost surely, 2^381366941 is an apocalyptic number.

It is an amenable number.

381366941 is a deficient number, since it is larger than the sum of its proper divisors (1).

381366941 is an equidigital number, since it uses as much as digits as its factorization.

381366941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 41.

The square root of 381366941 is about 19528.6185123270. The cubic root of 381366941 is about 725.1831109422.

The spelling of 381366941 in words is "three hundred eighty-one million, three hundred sixty-six thousand, nine hundred forty-one".