38906563 has 2 divisors, whose sum is σ = 38906564. Its totient is φ = 38906562.

The previous prime is 38906561. The next prime is 38906599. The reversal of 38906563 is 36560983.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38906563 - 2¹ = 38906561 is a prime.

Together with 38906561, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (38906561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19453281 + 19453282.

It is an arithmetic number, because the mean of its divisors is an integer number (19453282).

Almost surely, 2^38906563 is an apocalyptic number.

38906563 is a deficient number, since it is larger than the sum of its proper divisors (1).

38906563 is an equidigital number, since it uses as much as digits as its factorization.

38906563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 38906563 is about 6237.5125651176. The cubic root of 38906563 is about 338.8501032662.

The spelling of 38906563 in words is "thirty-eight million, nine hundred six thousand, five hundred sixty-three".