38781049 has 2 divisors, whose sum is σ = 38781050. Its totient is φ = 38781048.

The previous prime is 38781037. The next prime is 38781053. The reversal of 38781049 is 94018783.

38781049 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., 24681024 + 14100025 = 4968^2 + 3755^2 .

It is a cyclic number.

It is not a de Polignac number, because 38781049 - 2⁹ = 38780537 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (38781079) 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, 19390524 + 19390525.

It is an arithmetic number, because the mean of its divisors is an integer number (19390525).

Almost surely, 2^38781049 is an apocalyptic number.

It is an amenable number.

38781049 is a deficient number, since it is larger than the sum of its proper divisors (1).

38781049 is an equidigital number, since it uses as much as digits as its factorization.

38781049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 38781049 is about 6227.4432153172. The cubic root of 38781049 is about 338.4853297710.

The spelling of 38781049 in words is "thirty-eight million, seven hundred eighty-one thousand, forty-nine".