38208881 has 2 divisors, whose sum is σ = 38208882. Its totient is φ = 38208880.

The previous prime is 38208853. The next prime is 38208917. The reversal of 38208881 is 18880283.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33408400 + 4800481 = 5780^2 + 2191^2 .

It is a cyclic number.

It is not a de Polignac number, because 38208881 - 2⁶ = 38208817 is a prime.

It is a super-2 number, since 2×38208881² = 2919837174544322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (38208851) 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 as a sum of consecutive naturals, namely, 19104440 + 19104441.

It is an arithmetic number, because the mean of its divisors is an integer number (19104441).

Almost surely, 2^38208881 is an apocalyptic number.

It is an amenable number.

38208881 is a deficient number, since it is larger than the sum of its proper divisors (1).

38208881 is an equidigital number, since it uses as much as digits as its factorization.

38208881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24576, while the sum is 38.

The square root of 38208881 is about 6181.3332704199. Note that the first 3 decimals coincide. The cubic root of 38208881 is about 336.8124266182.

The spelling of 38208881 in words is "thirty-eight million, two hundred eight thousand, eight hundred eighty-one".