1426827681 has 12 divisors (see below), whose sum is σ = 2099860308. Its totient is φ = 933270624.

The previous prime is 1426827673. The next prime is 1426827709. The reversal of 1426827681 is 1867286241.

1426827681 is a `hidden beast` number, since 1 + 426 + 82 + 76 + 81 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 416160000 + 1010667681 = 20400^2 + 31791^2 .

It is not a de Polignac number, because 1426827681 - 2³ = 1426827673 is a prime.

It is a super-2 number, since 2×1426827681² = 4071674462535675522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1426825681) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1495150 + ... + 1496103.

It is an arithmetic number, because the mean of its divisors is an integer number (174988359).

Almost surely, 2^1426827681 is an apocalyptic number.

It is an amenable number.

1426827681 is a deficient number, since it is larger than the sum of its proper divisors (673032627).

1426827681 is a wasteful number, since it uses less digits than its factorization.

1426827681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2991312 (or 2991309 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 1426827681 is about 37773.3726452908. The cubic root of 1426827681 is about 1125.7894524022.

The spelling of 1426827681 in words is "one billion, four hundred twenty-six million, eight hundred twenty-seven thousand, six hundred eighty-one".