38427661 has 2 divisors, whose sum is σ = 38427662. Its totient is φ = 38427660.

The previous prime is 38427643. The next prime is 38427673. The reversal of 38427661 is 16672483.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22146436 + 16281225 = 4706^2 + 4035^2 .

It is a cyclic number.

It is not a de Polignac number, because 38427661 - 2¹¹ = 38425613 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38427661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38427061) 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, 19213830 + 19213831.

It is an arithmetic number, because the mean of its divisors is an integer number (19213831).

Almost surely, 2^38427661 is an apocalyptic number.

It is an amenable number.

38427661 is a deficient number, since it is larger than the sum of its proper divisors (1).

38427661 is an equidigital number, since it uses as much as digits as its factorization.

38427661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 37.

The square root of 38427661 is about 6199.0048394884. The cubic root of 38427661 is about 337.4540542850.

The spelling of 38427661 in words is "thirty-eight million, four hundred twenty-seven thousand, six hundred sixty-one".