8126463281 has 8 divisors (see below), whose sum is σ = 8209070760. Its totient is φ = 8044002432.

The previous prime is 8126463269. The next prime is 8126463307. The reversal of 8126463281 is 1823646218.

It can be written as a sum of positive squares in 4 ways, for example, as 2305536256 + 5820927025 = 48016^2 + 76295^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8126463281 - 2¹⁰ = 8126462257 is a prime.

It is a super-2 number, since 2×8126463281² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8126463221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76511 + ... + 148683.

It is an arithmetic number, because the mean of its divisors is an integer number (1026133845).

Almost surely, 2^8126463281 is an apocalyptic number.

It is an amenable number.

8126463281 is a deficient number, since it is larger than the sum of its proper divisors (82607479).

8126463281 is a wasteful number, since it uses less digits than its factorization.

8126463281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73315.

The product of its digits is 110592, while the sum is 41.

The square root of 8126463281 is about 90146.8983437589. The cubic root of 8126463281 is about 2010.4835582371.

The spelling of 8126463281 in words is "eight billion, one hundred twenty-six million, four hundred sixty-three thousand, two hundred eighty-one".