38885881 has 4 divisors (see below), whose sum is σ = 39089664. Its totient is φ = 38682100.

The previous prime is 38885867. The next prime is 38885887. The reversal of 38885881 is 18858883.

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: 18858883 = 607 ⋅31069.

It is a cyclic number.

It is not a de Polignac number, because 38885881 - 2¹⁷ = 38754809 is a prime.

It is a super-2 number, since 2×38885881² = 3024223482292322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38885887) 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, 101605 + ... + 101986.

It is an arithmetic number, because the mean of its divisors is an integer number (9772416).

Almost surely, 2^38885881 is an apocalyptic number.

It is an amenable number.

38885881 is a deficient number, since it is larger than the sum of its proper divisors (203783).

38885881 is a wasteful number, since it uses less digits than its factorization.

38885881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203782.

The product of its digits is 491520, while the sum is 49.

The square root of 38885881 is about 6235.8544723237. The cubic root of 38885881 is about 338.7900505017.

The spelling of 38885881 in words is "thirty-eight million, eight hundred eighty-five thousand, eight hundred eighty-one".