6731457381 has 24 divisors (see below), whose sum is σ = 10660478400. Its totient is φ = 4059158400.

The previous prime is 6731457349. The next prime is 6731457391. The reversal of 6731457381 is 1837541376.

6731457381 is a `hidden beast` number, since 6 + 73 + 1 + 4 + 573 + 8 + 1 = 666.

It is not a de Polignac number, because 6731457381 - 2⁵ = 6731457349 is a prime.

It is a super-2 number, since 2×6731457381² = 90625036944438758322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6731457391) 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 in 23 ways as a sum of consecutive naturals, for example, 151140 + ... + 190541.

It is an arithmetic number, because the mean of its divisors is an integer number (444186600).

Almost surely, 2^6731457381 is an apocalyptic number.

It is an amenable number.

6731457381 is a deficient number, since it is larger than the sum of its proper divisors (3929021019).

6731457381 is a wasteful number, since it uses less digits than its factorization.

6731457381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341897 (or 341894 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 6731457381 is about 82045.4592345000. The cubic root of 6731457381 is about 1888.1494517940.

The spelling of 6731457381 in words is "six billion, seven hundred thirty-one million, four hundred fifty-seven thousand, three hundred eighty-one".