381856875 has 20 divisors (see below), whose sum is σ = 636227592. Its totient is φ = 203656000.

The previous prime is 381856843. The next prime is 381856877. The reversal of 381856875 is 578658183.

It is not a de Polignac number, because 381856875 - 2⁵ = 381856843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (381856877) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 99954 + ... + 103703.

Almost surely, 2^381856875 is an apocalyptic number.

381856875 is a deficient number, since it is larger than the sum of its proper divisors (254370717).

381856875 is an equidigital number, since it uses as much as digits as its factorization.

381856875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203680 (or 203665 counting only the distinct ones).

The product of its digits is 1612800, while the sum is 51.

The square root of 381856875 is about 19541.1584866404. The cubic root of 381856875 is about 725.4935204955.

The spelling of 381856875 in words is "three hundred eighty-one million, eight hundred fifty-six thousand, eight hundred seventy-five".