381888107 has 2 divisors, whose sum is σ = 381888108. Its totient is φ = 381888106.

The previous prime is 381887993. The next prime is 381888109. The reversal of 381888107 is 701888183.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 381888107 - 2⁸ = 381887851 is a prime.

Together with 381888109, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (381888109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190944053 + 190944054.

It is an arithmetic number, because the mean of its divisors is an integer number (190944054).

Almost surely, 2^381888107 is an apocalyptic number.

381888107 is a deficient number, since it is larger than the sum of its proper divisors (1).

381888107 is an equidigital number, since it uses as much as digits as its factorization.

381888107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86016, while the sum is 44.

The square root of 381888107 is about 19541.9576040887. The cubic root of 381888107 is about 725.5132992813.

The spelling of 381888107 in words is "three hundred eighty-one million, eight hundred eighty-eight thousand, one hundred seven".