38163397 has 2 divisors, whose sum is σ = 38163398. Its totient is φ = 38163396.

The previous prime is 38163379. The next prime is 38163409. The reversal of 38163397 is 79336183.

Together with previous prime (38163379) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19793601 + 18369796 = 4449^2 + 4286^2 .

It is an emirp because it is prime and its reverse (79336183) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38163397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38163197) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19081698 + 19081699.

It is an arithmetic number, because the mean of its divisors is an integer number (19081699).

Almost surely, 2^38163397 is an apocalyptic number.

It is an amenable number.

38163397 is a deficient number, since it is larger than the sum of its proper divisors (1).

38163397 is an equidigital number, since it uses as much as digits as its factorization.

38163397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 40.

The square root of 38163397 is about 6177.6530333129. The cubic root of 38163397 is about 336.6787259456.

The spelling of 38163397 in words is "thirty-eight million, one hundred sixty-three thousand, three hundred ninety-seven".