38354381 has 12 divisors (see below), whose sum is σ = 41882112. Its totient is φ = 35105616.

The previous prime is 38354377. The next prime is 38354399. The reversal of 38354381 is 18345383.

It is not a de Polignac number, because 38354381 - 2² = 38354377 is a prime.

It is a super-2 number, since 2×38354381² = 2942117083786322, 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 (38374381) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20570 + ... + 22356.

It is an arithmetic number, because the mean of its divisors is an integer number (3490176).

Almost surely, 2^38354381 is an apocalyptic number.

It is an amenable number.

38354381 is a deficient number, since it is larger than the sum of its proper divisors (3527731).

38354381 is a wasteful number, since it uses less digits than its factorization.

38354381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1940 (or 1927 counting only the distinct ones).

The product of its digits is 34560, while the sum is 35.

The square root of 38354381 is about 6193.0913928344. The cubic root of 38354381 is about 337.2394140323.

The spelling of 38354381 in words is "thirty-eight million, three hundred fifty-four thousand, three hundred eighty-one".