8139266782 has 16 divisors (see below), whose sum is σ = 12797536752. Its totient is φ = 3878038080.

The previous prime is 8139266777. The next prime is 8139266819. The reversal of 8139266782 is 2876629318.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1150653 + ... + 1157704.

It is an arithmetic number, because the mean of its divisors is an integer number (799846047).

Almost surely, 2^8139266782 is an apocalyptic number.

8139266782 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

8139266782 is a deficient number, since it is larger than the sum of its proper divisors (4658269970).

8139266782 is a wasteful number, since it uses less digits than its factorization.

8139266782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2308443.

The product of its digits is 1741824, while the sum is 52.

The square root of 8139266782 is about 90217.8850450397. The cubic root of 8139266782 is about 2011.5388644415.

The spelling of 8139266782 in words is "eight billion, one hundred thirty-nine million, two hundred sixty-six thousand, seven hundred eighty-two".