381882381 has 8 divisors (see below), whose sum is σ = 512594400. Its totient is φ = 252879312.

The previous prime is 381882377. The next prime is 381882383. The reversal of 381882381 is 183288183.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 381882381 - 2² = 381882377 is a prime.

It is a super-4 number, since 4×381882381⁴ (a number of 35 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381882383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 426715 + ... + 427608.

It is an arithmetic number, because the mean of its divisors is an integer number (64074300).

Almost surely, 2^381882381 is an apocalyptic number.

It is an amenable number.

381882381 is a deficient number, since it is larger than the sum of its proper divisors (130712019).

381882381 is a wasteful number, since it uses less digits than its factorization.

381882381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854475.

The product of its digits is 73728, while the sum is 42.

The square root of 381882381 is about 19541.8110982580. The cubic root of 381882381 is about 725.5096731668.

The spelling of 381882381 in words is "three hundred eighty-one million, eight hundred eighty-two thousand, three hundred eighty-one".