18178181114 has 32 divisors (see below), whose sum is σ = 28252825920. Its totient is φ = 8766172800.

The previous prime is 18178181081. The next prime is 18178181129. The reversal of 18178181114 is 41118187181.

It is a happy number.

It is a super-2 number, since 2×18178181114² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 9038369 + ... + 9040379.

It is an arithmetic number, because the mean of its divisors is an integer number (882900810).

Almost surely, 2^18178181114 is an apocalyptic number.

18178181114 is a deficient number, since it is larger than the sum of its proper divisors (10074644806).

18178181114 is a wasteful number, since it uses less digits than its factorization.

18178181114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3326.

The product of its digits is 14336, while the sum is 41.

The spelling of 18178181114 in words is "eighteen billion, one hundred seventy-eight million, one hundred eighty-one thousand, one hundred fourteen".