381385 has 8 divisors (see below), whose sum is σ = 463680. Its totient is φ = 301104.

The previous prime is 381383. The next prime is 381389. The reversal of 381385 is 583183.

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 381385 - 2¹ = 381383 is a prime.

381385 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (381383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45 + ... + 874.

It is an arithmetic number, because the mean of its divisors is an integer number (57960).

2³⁸¹³⁸⁵ is an apocalyptic number.

It is an amenable number.

381385 is a deficient number, since it is larger than the sum of its proper divisors (82295).

381385 is an equidigital number, since it uses as much as digits as its factorization.

381385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007.

The product of its digits is 2880, while the sum is 28.

The square root of 381385 is about 617.5637618902. The cubic root of 381385 is about 72.5194557377.

The spelling of 381385 in words is "three hundred eighty-one thousand, three hundred eighty-five".