6338687481 has 60 divisors (see below), whose sum is σ = 11223046692. Its totient is φ = 3553647552.

The previous prime is 6338687471. The next prime is 6338687483. The reversal of 6338687481 is 1847868336.

6338687481 is a `hidden beast` number, since 6 + 3 + 3 + 86 + 87 + 481 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3265093881 + 3073593600 = 57141^2 + 55440^2 .

It is not a de Polignac number, because 6338687481 - 2¹⁷ = 6338556409 is a prime.

It is a super-2 number, since 2×6338687481² = 80357917963572250722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6338687483) by changing a digit.

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 59 ways as a sum of consecutive naturals, for example, 195291 + ... + 225423.

Almost surely, 2^6338687481 is an apocalyptic number.

It is an amenable number.

6338687481 is a deficient number, since it is larger than the sum of its proper divisors (4884359211).

6338687481 is a wasteful number, since it uses less digits than its factorization.

6338687481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30212 (or 30196 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 54.

The square root of 6338687481 is about 79615.8745540109. The cubic root of 6338687481 is about 1850.6875925713.

The spelling of 6338687481 in words is "six billion, three hundred thirty-eight million, six hundred eighty-seven thousand, four hundred eighty-one".