381693 has 8 divisors (see below), whose sum is σ = 548128. Its totient is φ = 234864.

The previous prime is 381673. The next prime is 381697. The reversal of 381693 is 396183.

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

It is not a de Polignac number, because 381693 - 2⁶ = 381629 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 381693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4855 + ... + 4932.

It is an arithmetic number, because the mean of its divisors is an integer number (68516).

2³⁸¹⁶⁹³ is an apocalyptic number.

It is an amenable number.

381693 is a deficient number, since it is larger than the sum of its proper divisors (166435).

381693 is a wasteful number, since it uses less digits than its factorization.

381693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9803.

The product of its digits is 3888, while the sum is 30.

The square root of 381693 is about 617.8130785278. The cubic root of 381693 is about 72.5389723087.

The spelling of 381693 in words is "three hundred eighty-one thousand, six hundred ninety-three".