38811 has 8 divisors (see below), whose sum is σ = 54864. Its totient is φ = 24320.

The previous prime is 38803. The next prime is 38821. The reversal of 38811 is 11883.

It is a happy number.

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 38811 - 2³ = 38803 is a prime.

38811 is a lucky number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (38821) 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, 330 + ... + 431.

It is an arithmetic number, because the mean of its divisors is an integer number (6858).

2³⁸⁸¹¹ is an apocalyptic number.

38811 is a deficient number, since it is larger than the sum of its proper divisors (16053).

38811 is a wasteful number, since it uses less digits than its factorization.

38811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781.

The product of its digits is 192, while the sum is 21.

The square root of 38811 is about 197.0050760767. The cubic root of 38811 is about 33.8572445906.

The spelling of 38811 in words is "thirty-eight thousand, eight hundred eleven".