38137381 has 4 divisors (see below), whose sum is σ = 39795552. Its totient is φ = 36479212.

The previous prime is 38137361. The next prime is 38137391. The reversal of 38137381 is 18373183.

38137381 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, and also an emirpimes, since its reverse is a distinct semiprime: 18373183 = 547 ⋅33589.

It is a cyclic number.

It is not a de Polignac number, because 38137381 - 2¹¹ = 38135333 is a prime.

It is a super-2 number, since 2×38137381² = 2908919659078322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38137321) 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, 829051 + ... + 829096.

It is an arithmetic number, because the mean of its divisors is an integer number (9948888).

Almost surely, 2^38137381 is an apocalyptic number.

It is an amenable number.

38137381 is a deficient number, since it is larger than the sum of its proper divisors (1658171).

38137381 is a wasteful number, since it uses less digits than its factorization.

38137381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1658170.

The product of its digits is 12096, while the sum is 34.

The square root of 38137381 is about 6175.5470203052. The cubic root of 38137381 is about 336.6022038894.

It can be divided in two parts, 3813 and 7381, that multiplied together give a triangular number (28143753 = T₇₅₀₂).

The spelling of 38137381 in words is "thirty-eight million, one hundred thirty-seven thousand, three hundred eighty-one".