18128466873 has 20 divisors (see below), whose sum is σ = 29542688208. Its totient is φ = 10986949080.

The previous prime is 18128466859. The next prime is 18128466893. The reversal of 18128466873 is 37866482181.

18128466873 is a `hidden beast` number, since 1 + 81 + 28 + 466 + 87 + 3 = 666.

It is not a de Polignac number, because 18128466873 - 2⁸ = 18128466617 is a prime.

It is a super-2 number, since 2×18128466873² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18128466823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10172211 + ... + 10173992.

Almost surely, 2^18128466873 is an apocalyptic number.

It is an amenable number.

18128466873 is a deficient number, since it is larger than the sum of its proper divisors (11414221335).

18128466873 is a wasteful number, since it uses less digits than its factorization.

18128466873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20346226 (or 20346217 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 54.

The spelling of 18128466873 in words is "eighteen billion, one hundred twenty-eight million, four hundred sixty-six thousand, eight hundred seventy-three".