38145517 has 2 divisors, whose sum is σ = 38145518. Its totient is φ = 38145516.

The previous prime is 38145511. The next prime is 38145553. The reversal of 38145517 is 71554183.

It is a happy number.

38145517 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24462916 + 13682601 = 4946^2 + 3699^2 .

It is an emirp because it is prime and its reverse (71554183) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38145517 - 2³ = 38145509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38145511) 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, 19072758 + 19072759.

It is an arithmetic number, because the mean of its divisors is an integer number (19072759).

Almost surely, 2^38145517 is an apocalyptic number.

It is an amenable number.

38145517 is a deficient number, since it is larger than the sum of its proper divisors (1).

38145517 is an equidigital number, since it uses as much as digits as its factorization.

38145517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16800, while the sum is 34.

The square root of 38145517 is about 6176.2057122476. The cubic root of 38145517 is about 336.6261384189.

The spelling of 38145517 in words is "thirty-eight million, one hundred forty-five thousand, five hundred seventeen".