38181797 has 2 divisors, whose sum is σ = 38181798. Its totient is φ = 38181796.

The previous prime is 38181733. The next prime is 38181823. The reversal of 38181797 is 79718183.

38181797 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31348801 + 6832996 = 5599^2 + 2614^2 .

It is an emirp because it is prime and its reverse (79718183) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38181797 - 2⁶ = 38181733 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38181707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19090898 + 19090899.

It is an arithmetic number, because the mean of its divisors is an integer number (19090899).

Almost surely, 2^38181797 is an apocalyptic number.

It is an amenable number.

38181797 is a deficient number, since it is larger than the sum of its proper divisors (1).

38181797 is an equidigital number, since it uses as much as digits as its factorization.

38181797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 44.

The square root of 38181797 is about 6179.1420925562. The cubic root of 38181797 is about 336.7328257176.

The spelling of 38181797 in words is "thirty-eight million, one hundred eighty-one thousand, seven hundred ninety-seven".