38897181 has 12 divisors (see below), whose sum is σ = 56272320. Its totient is φ = 25891080.

The previous prime is 38897141. The next prime is 38897191. The reversal of 38897181 is 18179883.

38897181 is a `hidden beast` number, since 388 + 97 + 181 = 666.

It is not a de Polignac number, because 38897181 - 2²⁵ = 5342749 is a prime.

It is a super-2 number, since 2×38897181² = 3025981379493522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38897141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3466 + ... + 9476.

It is an arithmetic number, because the mean of its divisors is an integer number (4689360).

Almost surely, 2^38897181 is an apocalyptic number.

It is an amenable number.

38897181 is a deficient number, since it is larger than the sum of its proper divisors (17375139).

38897181 is a wasteful number, since it uses less digits than its factorization.

38897181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6736 (or 6733 counting only the distinct ones).

The product of its digits is 96768, while the sum is 45.

The square root of 38897181 is about 6236.7604571604. The cubic root of 38897181 is about 338.8228640980.

The spelling of 38897181 in words is "thirty-eight million, eight hundred ninety-seven thousand, one hundred eighty-one".