381825827 has 2 divisors, whose sum is σ = 381825828. Its totient is φ = 381825826.

The previous prime is 381825823. The next prime is 381825869. The reversal of 381825827 is 728528183.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 381825827 - 2² = 381825823 is a prime.

It is not a weakly prime, because it can be changed into another prime (381825823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190912913 + 190912914.

It is an arithmetic number, because the mean of its divisors is an integer number (190912914).

Almost surely, 2^381825827 is an apocalyptic number.

381825827 is a deficient number, since it is larger than the sum of its proper divisors (1).

381825827 is an equidigital number, since it uses as much as digits as its factorization.

381825827 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 215040, while the sum is 44.

The square root of 381825827 is about 19540.3640447152. The cubic root of 381825827 is about 725.4738571654.

The spelling of 381825827 in words is "three hundred eighty-one million, eight hundred twenty-five thousand, eight hundred twenty-seven".