8126681492 has 24 divisors (see below), whose sum is σ = 14578540200. Its totient is φ = 3962635776.

The previous prime is 8126681483. The next prime is 8126681567. The reversal of 8126681492 is 2941866218.

It can be written as a sum of positive squares in 4 ways, for example, as 52940176 + 8073741316 = 7276^2 + 89854^2 .

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, 130367 + ... + 182342.

It is an arithmetic number, because the mean of its divisors is an integer number (607439175).

Almost surely, 2^8126681492 is an apocalyptic number.

It is an amenable number.

8126681492 is a deficient number, since it is larger than the sum of its proper divisors (6451858708).

8126681492 is a wasteful number, since it uses less digits than its factorization.

8126681492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312875 (or 312873 counting only the distinct ones).

The product of its digits is 331776, while the sum is 47.

The square root of 8126681492 is about 90148.1086434985. The cubic root of 8126681492 is about 2010.5015531789.

The spelling of 8126681492 in words is "eight billion, one hundred twenty-six million, six hundred eighty-one thousand, four hundred ninety-two".