18500001112 has 32 divisors (see below), whose sum is σ = 35808371280. Its totient is φ = 8954910720.

The previous prime is 18500001101. The next prime is 18500001151. The reversal of 18500001112 is 21110000581.

It is a happy number.

It is a super-2 number, since 2×18500001112² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18500001112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199089 + ... + 276832.

Almost surely, 2^18500001112 is an apocalyptic number.

It is an amenable number.

18500001112 is a deficient number, since it is larger than the sum of its proper divisors (17308370168).

18500001112 is a wasteful number, since it uses less digits than its factorization.

18500001112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476083 (or 476079 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 19.

Adding to 18500001112 its reverse (21110000581), we get a palindrome (39610001693).

The spelling of 18500001112 in words is "eighteen billion, five hundred million, one thousand, one hundred twelve".