38658081 has 32 divisors (see below), whose sum is σ = 66014208. Its totient is φ = 19535040.

The previous prime is 38658071. The next prime is 38658133. The reversal of 38658081 is 18085683.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-38658081 is a prime.

It is a super-2 number, since 2×38658081² = 2988894453205122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (38658001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6286 + ... + 10808.

It is an arithmetic number, because the mean of its divisors is an integer number (2062944).

Almost surely, 2^38658081 is an apocalyptic number.

It is an amenable number.

38658081 is a deficient number, since it is larger than the sum of its proper divisors (27356127).

38658081 is a wasteful number, since it uses less digits than its factorization.

38658081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4581.

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 38658081 is about 6217.5623036685. The cubic root of 38658081 is about 338.1271914901.

The spelling of 38658081 in words is "thirty-eight million, six hundred fifty-eight thousand, eighty-one".