38032381 has 4 divisors (see below), whose sum is σ = 39259264. Its totient is φ = 36805500.

The previous prime is 38032367. The next prime is 38032391. The reversal of 38032381 is 18323083.

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 38032381 - 2¹⁵ = 37999613 is a prime.

It is a super-2 number, since 2×38032381² = 2892924009058322, 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 (38032321) 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, 613395 + ... + 613456.

It is an arithmetic number, because the mean of its divisors is an integer number (9814816).

Almost surely, 2^38032381 is an apocalyptic number.

38032381 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

38032381 is a deficient number, since it is larger than the sum of its proper divisors (1226883).

38032381 is a wasteful number, since it uses less digits than its factorization.

38032381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226882.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 38032381 is about 6167.0398896067. The cubic root of 38032381 is about 336.2930084151.

It can be divided in two parts, 380 and 32381, that added together give a square (32761 = 181²).

The spelling of 38032381 in words is "thirty-eight million, thirty-two thousand, three hundred eighty-one".