381837 has 8 divisors (see below), whose sum is σ = 539136. Its totient is φ = 239552.

The previous prime is 381817. The next prime is 381841. The reversal of 381837 is 738183.

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

It is a cyclic number.

It is not a de Polignac number, because 381837 - 2¹⁶ = 316301 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 381837.

It is not an unprimeable number, because it can be changed into a prime (381817) 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, 3693 + ... + 3794.

It is an arithmetic number, because the mean of its divisors is an integer number (67392).

2³⁸¹⁸³⁷ is an apocalyptic number.

It is an amenable number.

381837 is a deficient number, since it is larger than the sum of its proper divisors (157299).

381837 is a wasteful number, since it uses less digits than its factorization.

381837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7507.

The product of its digits is 4032, while the sum is 30.

The square root of 381837 is about 617.9296076415. The cubic root of 381837 is about 72.5480933376.

The spelling of 381837 in words is "three hundred eighty-one thousand, eight hundred thirty-seven".