18281490111 has 12 divisors (see below), whose sum is σ = 26724749688. Its totient is φ = 12040820304.

The previous prime is 18281490049. The next prime is 18281490127. The reversal of 18281490111 is 11109418281.

18281490111 is a `hidden beast` number, since 1 + 82 + 81 + 490 + 1 + 11 = 666.

It is not a de Polignac number, because 18281490111 - 2¹¹ = 18281488063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18281490011) 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, 12235860 + ... + 12237353.

It is an arithmetic number, because the mean of its divisors is an integer number (2227062474).

Almost surely, 2^18281490111 is an apocalyptic number.

18281490111 is a deficient number, since it is larger than the sum of its proper divisors (8443259577).

18281490111 is a wasteful number, since it uses less digits than its factorization.

18281490111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24473302 (or 24473299 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 36.

The spelling of 18281490111 in words is "eighteen billion, two hundred eighty-one million, four hundred ninety thousand, one hundred eleven".