38108909 has 2 divisors, whose sum is σ = 38108910. Its totient is φ = 38108908.

The previous prime is 38108897. The next prime is 38108923. The reversal of 38108909 is 90980183.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24255625 + 13853284 = 4925^2 + 3722^2 .

It is a cyclic number.

It is not a de Polignac number, because 38108909 - 2²⁰ = 37060333 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38108989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19054454 + 19054455.

It is an arithmetic number, because the mean of its divisors is an integer number (19054455).

Almost surely, 2^38108909 is an apocalyptic number.

It is an amenable number.

38108909 is a deficient number, since it is larger than the sum of its proper divisors (1).

38108909 is an equidigital number, since it uses as much as digits as its factorization.

38108909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 38108909 is about 6173.2413690054. The cubic root of 38108909 is about 336.5184179935.

The spelling of 38108909 in words is "thirty-eight million, one hundred eight thousand, nine hundred nine".