381743927 has 2 divisors, whose sum is σ = 381743928. Its totient is φ = 381743926.

The previous prime is 381743899. The next prime is 381743987. The reversal of 381743927 is 729347183.

It is a weak prime.

It is an emirp because it is prime and its reverse (729347183) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 381743927 - 2⁶ = 381743863 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 (381743987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190871963 + 190871964.

It is an arithmetic number, because the mean of its divisors is an integer number (190871964).

Almost surely, 2^381743927 is an apocalyptic number.

381743927 is a deficient number, since it is larger than the sum of its proper divisors (1).

381743927 is an equidigital number, since it uses as much as digits as its factorization.

381743927 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 44.

The square root of 381743927 is about 19538.2682702434. The cubic root of 381743927 is about 725.4219831142.

The spelling of 381743927 in words is "three hundred eighty-one million, seven hundred forty-three thousand, nine hundred twenty-seven".