18130060881 has 12 divisors (see below), whose sum is σ = 26189100340. Its totient is φ = 12086137440.

The previous prime is 18130060867. The next prime is 18130060931. The reversal of 18130060881 is 18806003181.

18130060881 is a `hidden beast` number, since 18 + 1 + 30 + 0 + 608 + 8 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 920819025 + 17209241856 = 30345^2 + 131184^2 .

It is not a de Polignac number, because 18130060881 - 2¹⁴ = 18130044497 is a prime.

It is a super-3 number, since 3×18130060881³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18130060981) 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, 256335 + ... + 319323.

Almost surely, 2^18130060881 is an apocalyptic number.

It is an amenable number.

18130060881 is a deficient number, since it is larger than the sum of its proper divisors (8059039459).

18130060881 is a wasteful number, since it uses less digits than its factorization.

18130060881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94976 (or 94973 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The spelling of 18130060881 in words is "eighteen billion, one hundred thirty million, sixty thousand, eight hundred eighty-one".