381849 has 8 divisors (see below), whose sum is σ = 548352. Its totient is φ = 234960.

The previous prime is 381841. The next prime is 381853. The reversal of 381849 is 948183.

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

It is not a de Polignac number, because 381849 - 2³ = 381841 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (381841) 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, 4857 + ... + 4934.

It is an arithmetic number, because the mean of its divisors is an integer number (68544).

2³⁸¹⁸⁴⁹ is an apocalyptic number.

381849 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

381849 is a deficient number, since it is larger than the sum of its proper divisors (166503).

381849 is a wasteful number, since it uses less digits than its factorization.

381849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9807.

The product of its digits is 6912, while the sum is 33.

The square root of 381849 is about 617.9393174091. The cubic root of 381849 is about 72.5488533199.

The spelling of 381849 in words is "three hundred eighty-one thousand, eight hundred forty-nine".