38385661 has 2 divisors, whose sum is σ = 38385662. Its totient is φ = 38385660.

The previous prime is 38385649. The next prime is 38385671. The reversal of 38385661 is 16658383.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24651225 + 13734436 = 4965^2 + 3706^2 .

It is a cyclic number.

It is not a de Polignac number, because 38385661 - 2⁵ = 38385629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38385671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19192830 + 19192831.

It is an arithmetic number, because the mean of its divisors is an integer number (19192831).

Almost surely, 2^38385661 is an apocalyptic number.

It is an amenable number.

38385661 is a deficient number, since it is larger than the sum of its proper divisors (1).

38385661 is an equidigital number, since it uses as much as digits as its factorization.

38385661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 40.

The square root of 38385661 is about 6195.6162728174. The cubic root of 38385661 is about 337.3310679032.

The spelling of 38385661 in words is "thirty-eight million, three hundred eighty-five thousand, six hundred sixty-one".