38381449 has 2 divisors, whose sum is σ = 38381450. Its totient is φ = 38381448.

The previous prime is 38381437. The next prime is 38381489. The reversal of 38381449 is 94418383.

It is an a-pointer prime, because the next prime (38381489) can be obtained adding 38381449 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23941449 + 14440000 = 4893^2 + 3800^2 .

It is a cyclic number.

It is not a de Polignac number, because 38381449 - 2⁵ = 38381417 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (38381489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19190724 + 19190725.

It is an arithmetic number, because the mean of its divisors is an integer number (19190725).

Almost surely, 2^38381449 is an apocalyptic number.

It is an amenable number.

38381449 is a deficient number, since it is larger than the sum of its proper divisors (1).

38381449 is an equidigital number, since it uses as much as digits as its factorization.

38381449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 40.

The square root of 38381449 is about 6195.2763457331. The cubic root of 38381449 is about 337.3187291774.

The spelling of 38381449 in words is "thirty-eight million, three hundred eighty-one thousand, four hundred forty-nine".