38418197 has 2 divisors, whose sum is σ = 38418198. Its totient is φ = 38418196.

The previous prime is 38418187. The next prime is 38418199. The reversal of 38418197 is 79181483.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20151121 + 18267076 = 4489^2 + 4274^2 .

It is an emirp because it is prime and its reverse (79181483) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38418197 - 2¹⁴ = 38401813 is a prime.

Together with 38418199, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38418199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19209098 + 19209099.

It is an arithmetic number, because the mean of its divisors is an integer number (19209099).

Almost surely, 2^38418197 is an apocalyptic number.

It is an amenable number.

38418197 is a deficient number, since it is larger than the sum of its proper divisors (1).

38418197 is an equidigital number, since it uses as much as digits as its factorization.

38418197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 41.

The square root of 38418197 is about 6198.2414441517. The cubic root of 38418197 is about 337.4263491779.

It can be divided in two parts, 384 and 18197, that added together give a palindrome (18581).

The spelling of 38418197 in words is "thirty-eight million, four hundred eighteen thousand, one hundred ninety-seven".