5440918681 has 16 divisors (see below), whose sum is σ = 6008211648. Its totient is φ = 4886107200.

The previous prime is 5440918673. The next prime is 5440918687. The reversal of 5440918681 is 1868190445.

It is a cyclic number.

It is not a de Polignac number, because 5440918681 - 2³ = 5440918673 is a prime.

It is a super-2 number, since 2×5440918681² = 59207192186509559522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5440918687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 289666 + ... + 307876.

It is an arithmetic number, because the mean of its divisors is an integer number (375513228).

Almost surely, 2^5440918681 is an apocalyptic number.

It is an amenable number.

5440918681 is a deficient number, since it is larger than the sum of its proper divisors (567292967).

5440918681 is a wasteful number, since it uses less digits than its factorization.

5440918681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18552.

The product of its (nonzero) digits is 276480, while the sum is 46.

The square root of 5440918681 is about 73762.5832044947. The cubic root of 5440918681 is about 1758.8308653467.

The spelling of 5440918681 in words is "five billion, four hundred forty million, nine hundred eighteen thousand, six hundred eighty-one".