6457979738 has 16 divisors (see below), whose sum is σ = 11071898880. Its totient is φ = 2767436496.

The previous prime is 6457979687. The next prime is 6457979743. The reversal of 6457979738 is 8379797546.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 209183 + ... + 238061.

It is an arithmetic number, because the mean of its divisors is an integer number (691993680).

Almost surely, 2^6457979738 is an apocalyptic number.

6457979738 is a deficient number, since it is larger than the sum of its proper divisors (4613919142).

6457979738 is a wasteful number, since it uses less digits than its factorization.

6457979738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44861.

The product of its digits is 80015040, while the sum is 65.

The square root of 6457979738 is about 80361.5563438140. The cubic root of 6457979738 is about 1862.2253145529.

The spelling of 6457979738 in words is "six billion, four hundred fifty-seven million, nine hundred seventy-nine thousand, seven hundred thirty-eight".