381427619 has 2 divisors, whose sum is σ = 381427620. Its totient is φ = 381427618.

The previous prime is 381427601. The next prime is 381427663. The reversal of 381427619 is 916724183.

It is a weak prime.

It is an emirp because it is prime and its reverse (916724183) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-381427619 is a prime.

It is a super-2 number, since 2×381427619² = 290974057072018322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (381427219) 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, 190713809 + 190713810.

It is an arithmetic number, because the mean of its divisors is an integer number (190713810).

Almost surely, 2^381427619 is an apocalyptic number.

381427619 is a deficient number, since it is larger than the sum of its proper divisors (1).

381427619 is an equidigital number, since it uses as much as digits as its factorization.

381427619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 41.

The square root of 381427619 is about 19530.1720166516. The cubic root of 381427619 is about 725.2215693773.

The spelling of 381427619 in words is "three hundred eighty-one million, four hundred twenty-seven thousand, six hundred nineteen".