38220113 has 2 divisors, whose sum is σ = 38220114. Its totient is φ = 38220112.

The previous prime is 38220109. The next prime is 38220151. The reversal of 38220113 is 31102283.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36820624 + 1399489 = 6068^2 + 1183^2 .

It is an emirp because it is prime and its reverse (31102283) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38220113 - 2² = 38220109 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (38220713) 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, 19110056 + 19110057.

It is an arithmetic number, because the mean of its divisors is an integer number (19110057).

Almost surely, 2^38220113 is an apocalyptic number.

It is an amenable number.

38220113 is a deficient number, since it is larger than the sum of its proper divisors (1).

38220113 is an equidigital number, since it uses as much as digits as its factorization.

38220113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 38220113 is about 6182.2417455159. The cubic root of 38220113 is about 336.8454268566.

Adding to 38220113 its reverse (31102283), we get a palindrome (69322396).

The spelling of 38220113 in words is "thirty-eight million, two hundred twenty thousand, one hundred thirteen".