38383381 has 4 divisors (see below), whose sum is σ = 38924064. Its totient is φ = 37842700.

The previous prime is 38383379. The next prime is 38383417. The reversal of 38383381 is 18338383.

38383381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 38383381 - 2¹ = 38383379 is a prime.

It is a super-2 number, since 2×38383381² = 2946567873982322, which contains 22 as substring.

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 38383381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38383351) 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 3 ways as a sum of consecutive naturals, for example, 270235 + ... + 270376.

It is an arithmetic number, because the mean of its divisors is an integer number (9731016).

Almost surely, 2^38383381 is an apocalyptic number.

It is an amenable number.

38383381 is a deficient number, since it is larger than the sum of its proper divisors (540683).

38383381 is an equidigital number, since it uses as much as digits as its factorization.

38383381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540682.

The product of its digits is 41472, while the sum is 37.

The square root of 38383381 is about 6195.4322690188. The cubic root of 38383381 is about 337.3243889329.

The spelling of 38383381 in words is "thirty-eight million, three hundred eighty-three thousand, three hundred eighty-one".