38750081 has 2 divisors, whose sum is σ = 38750082. Its totient is φ = 38750080.

The previous prime is 38750077. The next prime is 38750083. The reversal of 38750081 is 18005783.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37210000 + 1540081 = 6100^2 + 1241^2 .

It is an emirp because it is prime and its reverse (18005783) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38750081 - 2² = 38750077 is a prime.

It is a super-2 number, since 2×38750081² = 3003137555013122, which contains 22 as substring.

Together with 38750083, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (38750083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19375040 + 19375041.

It is an arithmetic number, because the mean of its divisors is an integer number (19375041).

Almost surely, 2^38750081 is an apocalyptic number.

It is an amenable number.

38750081 is a deficient number, since it is larger than the sum of its proper divisors (1).

38750081 is an equidigital number, since it uses as much as digits as its factorization.

38750081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 38750081 is about 6224.9563050675. The cubic root of 38750081 is about 338.3952083901.

The spelling of 38750081 in words is "thirty-eight million, seven hundred fifty thousand, eighty-one".