38205161 has 2 divisors, whose sum is σ = 38205162. Its totient is φ = 38205160.

The previous prime is 38205121. The next prime is 38205163. The reversal of 38205161 is 16150283.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38204761 + 400 = 6181^2 + 20^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38205161 is a prime.

Together with 38205163, it forms a pair of twin primes.

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 38205161.

It is not a weakly prime, because it can be changed into another prime (38205163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19102580 + 19102581.

It is an arithmetic number, because the mean of its divisors is an integer number (19102581).

Almost surely, 2^38205161 is an apocalyptic number.

It is an amenable number.

38205161 is a deficient number, since it is larger than the sum of its proper divisors (1).

38205161 is an equidigital number, since it uses as much as digits as its factorization.

38205161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 38205161 is about 6181.0323571391. The cubic root of 38205161 is about 336.8014956264.

The spelling of 38205161 in words is "thirty-eight million, two hundred five thousand, one hundred sixty-one".