38885732009 has 2 divisors, whose sum is σ = 38885732010. Its totient is φ = 38885732008.

The previous prime is 38885731979. The next prime is 38885732027. The reversal of 38885732009 is 90023758883.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22814592025 + 16071139984 = 151045^2 + 126772^2 .

It is a cyclic number.

It is not a de Polignac number, because 38885732009 - 2¹² = 38885727913 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (38885732029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19442866004 + 19442866005.

It is an arithmetic number, because the mean of its divisors is an integer number (19442866005).

Almost surely, 2^38885732009 is an apocalyptic number.

It is an amenable number.

38885732009 is a deficient number, since it is larger than the sum of its proper divisors (1).

38885732009 is an equidigital number, since it uses as much as digits as its factorization.

38885732009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2903040, while the sum is 53.

The spelling of 38885732009 in words is "thirty-eight billion, eight hundred eighty-five million, seven hundred thirty-two thousand, nine".