381185 has 8 divisors (see below), whose sum is σ = 522816. Its totient is φ = 261360.

The previous prime is 381181. The next prime is 381209. The reversal of 381185 is 581183.

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

It is not a de Polignac number, because 381185 - 2² = 381181 is a prime.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 381185.

It is not an unprimeable number, because it can be changed into a prime (381181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5411 + ... + 5480.

It is an arithmetic number, because the mean of its divisors is an integer number (65352).

2³⁸¹¹⁸⁵ is an apocalyptic number.

381185 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

381185 is a deficient number, since it is larger than the sum of its proper divisors (141631).

381185 is a wasteful number, since it uses less digits than its factorization.

381185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10903.

The product of its digits is 960, while the sum is 26.

The square root of 381185 is about 617.4018140563. The cubic root of 381185 is about 72.5067770122.

The spelling of 381185 in words is "three hundred eighty-one thousand, one hundred eighty-five".