38668633 has 2 divisors, whose sum is σ = 38668634. Its totient is φ = 38668632.

The previous prime is 38668613. The next prime is 38668649. The reversal of 38668633 is 33686683.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22963264 + 15705369 = 4792^2 + 3963^2 .

It is an emirp because it is prime and its reverse (33686683) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38668633 - 2⁹ = 38668121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38668633.

It is not a weakly prime, because it can be changed into another prime (38668603) 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, 19334316 + 19334317.

It is an arithmetic number, because the mean of its divisors is an integer number (19334317).

Almost surely, 2^38668633 is an apocalyptic number.

It is an amenable number.

38668633 is a deficient number, since it is larger than the sum of its proper divisors (1).

38668633 is an equidigital number, since it uses as much as digits as its factorization.

38668633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 373248, while the sum is 43.

The square root of 38668633 is about 6218.4108098452. The cubic root of 38668633 is about 338.1579534373.

The spelling of 38668633 in words is "thirty-eight million, six hundred sixty-eight thousand, six hundred thirty-three".