38169661 has 2 divisors, whose sum is σ = 38169662. Its totient is φ = 38169660.

The previous prime is 38169611. The next prime is 38169667. The reversal of 38169661 is 16696183.

38169661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35176761 + 2992900 = 5931^2 + 1730^2 .

It is a cyclic number.

It is not a de Polignac number, because 38169661 - 2¹⁹ = 37645373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38169667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19084830 + 19084831.

It is an arithmetic number, because the mean of its divisors is an integer number (19084831).

Almost surely, 2^38169661 is an apocalyptic number.

It is an amenable number.

38169661 is a deficient number, since it is larger than the sum of its proper divisors (1).

38169661 is an equidigital number, since it uses as much as digits as its factorization.

38169661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 40.

The square root of 38169661 is about 6178.1600011654. The cubic root of 38169661 is about 336.6971453416.

The spelling of 38169661 in words is "thirty-eight million, one hundred sixty-nine thousand, six hundred sixty-one".