38623381 has 4 divisors (see below), whose sum is σ = 38670912. Its totient is φ = 38575852.

The previous prime is 38623373. The next prime is 38623399. The reversal of 38623381 is 18332683.

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 38623381 - 2³ = 38623373 is a prime.

It is a super-2 number, since 2×38623381² = 2983531119742322, 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 (38624381) 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, 22525 + ... + 24178.

It is an arithmetic number, because the mean of its divisors is an integer number (9667728).

Almost surely, 2^38623381 is an apocalyptic number.

It is an amenable number.

38623381 is a deficient number, since it is larger than the sum of its proper divisors (47531).

38623381 is an equidigital number, since it uses as much as digits as its factorization.

38623381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47530.

The product of its digits is 20736, while the sum is 34.

The square root of 38623381 is about 6214.7711945010. The cubic root of 38623381 is about 338.0259920723.

The spelling of 38623381 in words is "thirty-eight million, six hundred twenty-three thousand, three hundred eighty-one".