5518158281 has 16 divisors (see below), whose sum is σ = 5810870016. Its totient is φ = 5233913856.

The previous prime is 5518158221. The next prime is 5518158287. The reversal of 5518158281 is 1828518155.

It is a cyclic number.

It is not a de Polignac number, because 5518158281 - 2²² = 5513963977 is a prime.

It is a super-2 number, since 2×5518158281² = 60900141628337749922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5518158287) 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, 440750 + ... + 453096.

It is an arithmetic number, because the mean of its divisors is an integer number (363179376).

Almost surely, 2^5518158281 is an apocalyptic number.

It is an amenable number.

5518158281 is a deficient number, since it is larger than the sum of its proper divisors (292711735).

5518158281 is a wasteful number, since it uses less digits than its factorization.

5518158281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12688.

The product of its digits is 128000, while the sum is 44.

The square root of 5518158281 is about 74284.3070977983. The cubic root of 5518158281 is about 1767.1146112533.

The spelling of 5518158281 in words is "five billion, five hundred eighteen million, one hundred fifty-eight thousand, two hundred eighty-one".