8138426064 has 40 divisors (see below), whose sum is σ = 21029627232. Its totient is φ = 2712117120.

The previous prime is 8138426059. The next prime is 8138426071. The reversal of 8138426064 is 4606248318.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189994 + ... + 228854.

Almost surely, 2^8138426064 is an apocalyptic number.

It is an amenable number.

8138426064 is an abundant number, since it is smaller than the sum of its proper divisors (12891201168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8138426064 is a wasteful number, since it uses less digits than its factorization.

8138426064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43235 (or 43229 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 42.

The square root of 8138426064 is about 90213.2255492508. The cubic root of 8138426064 is about 2011.4696036917.

The spelling of 8138426064 in words is "eight billion, one hundred thirty-eight million, four hundred twenty-six thousand, sixty-four".