381091727 has 2 divisors, whose sum is σ = 381091728. Its totient is φ = 381091726.

The previous prime is 381091723. The next prime is 381091741. The reversal of 381091727 is 727190183.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 381091727 - 2² = 381091723 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381091723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190545863 + 190545864.

It is an arithmetic number, because the mean of its divisors is an integer number (190545864).

Almost surely, 2^381091727 is an apocalyptic number.

381091727 is a deficient number, since it is larger than the sum of its proper divisors (1).

381091727 is an equidigital number, since it uses as much as digits as its factorization.

381091727 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 38.

The square root of 381091727 is about 19521.5708128214. The cubic root of 381091727 is about 725.0086258189.

The spelling of 381091727 in words is "three hundred eighty-one million, ninety-one thousand, seven hundred twenty-seven".