38381 has 4 divisors (see below), whose sum is σ = 43872. Its totient is φ = 32892.

The previous prime is 38377. The next prime is 38393. The reversal of 38381 is 18383.

38381 = T₂₀ + T₂₁ + ... + T₆₁.

38381 is nontrivially palindromic in base 9.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18383 = 31 ⋅593.

It is a cyclic number.

It is not a de Polignac number, because 38381 - 2² = 38377 is a prime.

It is a super-2 number, since 2×38381² = 2946202322, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

38381 is an undulating number in base 9.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2735 + ... + 2748.

It is an arithmetic number, because the mean of its divisors is an integer number (10968).

2³⁸³⁸¹ is an apocalyptic number.

It is an amenable number.

38381 is a deficient number, since it is larger than the sum of its proper divisors (5491).

38381 is an equidigital number, since it uses as much as digits as its factorization.

38381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5490.

The product of its digits is 576, while the sum is 23.

The square root of 38381 is about 195.9106939399. The cubic root of 38381 is about 33.7317413814.

It can be divided in two parts, 383 and 81, that added together give a palindrome (464).

The spelling of 38381 in words is "thirty-eight thousand, three hundred eighty-one".