381607871 has 2 divisors, whose sum is σ = 381607872. Its totient is φ = 381607870.

The previous prime is 381607829. The next prime is 381607901. The reversal of 381607871 is 178706183.

It is a strong prime.

It is an emirp because it is prime and its reverse (178706183) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 381607871 - 2²² = 377413567 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 (381607271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190803935 + 190803936.

It is an arithmetic number, because the mean of its divisors is an integer number (190803936).

Almost surely, 2^381607871 is an apocalyptic number.

381607871 is a deficient number, since it is larger than the sum of its proper divisors (1).

381607871 is an equidigital number, since it uses as much as digits as its factorization.

381607871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 41.

The square root of 381607871 is about 19534.7861774835. The cubic root of 381607871 is about 725.3357911809.

The spelling of 381607871 in words is "three hundred eighty-one million, six hundred seven thousand, eight hundred seventy-one".