6673781493 has 24 divisors (see below), whose sum is σ = 9804146976. Its totient is φ = 4373661600.

The previous prime is 6673781479. The next prime is 6673781537. The reversal of 6673781493 is 3941873766.

6673781493 is a `hidden beast` number, since 6 + 6 + 73 + 7 + 81 + 493 = 666.

It is not a de Polignac number, because 6673781493 - 2⁵ = 6673781461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6673781393) 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 23 ways as a sum of consecutive naturals, for example, 284803 + ... + 307343.

It is an arithmetic number, because the mean of its divisors is an integer number (408506124).

Almost surely, 2^6673781493 is an apocalyptic number.

It is an amenable number.

6673781493 is a deficient number, since it is larger than the sum of its proper divisors (3130365483).

6673781493 is a wasteful number, since it uses less digits than its factorization.

6673781493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23105 (or 23102 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 54.

The square root of 6673781493 is about 81693.2157097516. The cubic root of 6673781493 is about 1882.7413505153.

The spelling of 6673781493 in words is "six billion, six hundred seventy-three million, seven hundred eighty-one thousand, four hundred ninety-three".