6357985385 has 4 divisors (see below), whose sum is σ = 7629582468. Its totient is φ = 5086388304.

The previous prime is 6357985367. The next prime is 6357985399. The reversal of 6357985385 is 5835897536.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3330674944 + 3027310441 = 57712^2 + 55021^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6357985385 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 635798534 + ... + 635798543.

It is an arithmetic number, because the mean of its divisors is an integer number (1907395617).

Almost surely, 2^6357985385 is an apocalyptic number.

It is an amenable number.

6357985385 is a deficient number, since it is larger than the sum of its proper divisors (1271597083).

6357985385 is a wasteful number, since it uses less digits than its factorization.

6357985385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1271597082.

The product of its digits is 27216000, while the sum is 59.

The square root of 6357985385 is about 79736.9762719907. The cubic root of 6357985385 is about 1852.5638069063.

The spelling of 6357985385 in words is "six billion, three hundred fifty-seven million, nine hundred eighty-five thousand, three hundred eighty-five".