38221873 has 2 divisors, whose sum is σ = 38221874. Its totient is φ = 38221872.

The previous prime is 38221871. The next prime is 38221889. The reversal of 38221873 is 37812283.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36626704 + 1595169 = 6052^2 + 1263^2 .

It is an emirp because it is prime and its reverse (37812283) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38221873 - 2¹ = 38221871 is a prime.

Together with 38221871, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (38221871) 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, 19110936 + 19110937.

It is an arithmetic number, because the mean of its divisors is an integer number (19110937).

Almost surely, 2^38221873 is an apocalyptic number.

It is an amenable number.

38221873 is a deficient number, since it is larger than the sum of its proper divisors (1).

38221873 is an equidigital number, since it uses as much as digits as its factorization.

38221873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 34.

The square root of 38221873 is about 6182.3840870654. The cubic root of 38221873 is about 336.8505972481.

The spelling of 38221873 in words is "thirty-eight million, two hundred twenty-one thousand, eight hundred seventy-three".