38551381 has 8 divisors (see below), whose sum is σ = 43884864. Its totient is φ = 33522720.

The previous prime is 38551379. The next prime is 38551433. The reversal of 38551381 is 18315583.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 38551381 - 2¹ = 38551379 is a prime.

It is a super-2 number, since 2×38551381² = 2972417954014322, 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 (38551301) 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, 75936 + ... + 76441.

It is an arithmetic number, because the mean of its divisors is an integer number (5485608).

Almost surely, 2^38551381 is an apocalyptic number.

It is an amenable number.

38551381 is a deficient number, since it is larger than the sum of its proper divisors (5333483).

38551381 is a wasteful number, since it uses less digits than its factorization.

38551381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152411.

The product of its digits is 14400, while the sum is 34.

The square root of 38551381 is about 6208.9758414734. The cubic root of 38551381 is about 337.8158170464.

The spelling of 38551381 in words is "thirty-eight million, five hundred fifty-one thousand, three hundred eighty-one".