6385936009 has 2 divisors, whose sum is σ = 6385936010. Its totient is φ = 6385936008.

The previous prime is 6385936003. The next prime is 6385936103. The reversal of 6385936009 is 9006395836.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5449392400 + 936543609 = 73820^2 + 30603^2 .

It is a cyclic number.

It is not a de Polignac number, because 6385936009 - 2³ = 6385936001 is a prime.

It is a super-2 number, since 2×6385936009² = 81560357422085696162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6385936001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3192968004 + 3192968005.

It is an arithmetic number, because the mean of its divisors is an integer number (3192968005).

Almost surely, 2^6385936009 is an apocalyptic number.

It is an amenable number.

6385936009 is a deficient number, since it is larger than the sum of its proper divisors (1).

6385936009 is an equidigital number, since it uses as much as digits as its factorization.

6385936009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1049760, while the sum is 49.

The square root of 6385936009 is about 79912.0517131177. The cubic root of 6385936009 is about 1855.2745513811.

The spelling of 6385936009 in words is "six billion, three hundred eighty-five million, nine hundred thirty-six thousand, nine".