381048407 has 2 divisors, whose sum is σ = 381048408. Its totient is φ = 381048406.

The previous prime is 381048403. The next prime is 381048449. The reversal of 381048407 is 704840183.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (704840183) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 381048407 - 2² = 381048403 is a prime.

It is equal to p_20378555 and since 381048407 and 20378555 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381048403) 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, 190524203 + 190524204.

It is an arithmetic number, because the mean of its divisors is an integer number (190524204).

Almost surely, 2^381048407 is an apocalyptic number.

381048407 is a deficient number, since it is larger than the sum of its proper divisors (1).

381048407 is an equidigital number, since it uses as much as digits as its factorization.

381048407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 381048407 is about 19520.4612394277. The cubic root of 381048407 is about 724.9811533745.

The spelling of 381048407 in words is "three hundred eighty-one million, forty-eight thousand, four hundred seven".