38383661 has 2 divisors, whose sum is σ = 38383662. Its totient is φ = 38383660.

The previous prime is 38383621. The next prime is 38383669. The reversal of 38383661 is 16638383.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31147561 + 7236100 = 5581^2 + 2690^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38383661 is a prime.

It is a Chen prime.

It is a zygodrome in base 8.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38383669) 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, 19191830 + 19191831.

It is an arithmetic number, because the mean of its divisors is an integer number (19191831).

Almost surely, 2^38383661 is an apocalyptic number.

It is an amenable number.

38383661 is a deficient number, since it is larger than the sum of its proper divisors (1).

38383661 is an equidigital number, since it uses as much as digits as its factorization.

38383661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 38.

The square root of 38383661 is about 6195.4548662709. The cubic root of 38383661 is about 337.3252091716.

The spelling of 38383661 in words is "thirty-eight million, three hundred eighty-three thousand, six hundred sixty-one".