18134811 has 6 divisors (see below), whose sum is σ = 26194740. Its totient is φ = 12089868.

The previous prime is 18134807. The next prime is 18134813. The reversal of 18134811 is 11843181.

18134811 is a `hidden beast` number, since 181 + 3 + 481 + 1 = 666.

It is not a de Polignac number, because 18134811 - 2² = 18134807 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18134813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1007481 + ... + 1007498.

It is an arithmetic number, because the mean of its divisors is an integer number (4365790).

Almost surely, 2^18134811 is an apocalyptic number.

18134811 is a deficient number, since it is larger than the sum of its proper divisors (8059929).

18134811 is a wasteful number, since it uses less digits than its factorization.

18134811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2014985 (or 2014982 counting only the distinct ones).

The product of its digits is 768, while the sum is 27.

The square root of 18134811 is about 4258.4986791122. The cubic root of 18134811 is about 262.7267808921.

Adding to 18134811 its reverse (11843181), we get a palindrome (29977992).

The spelling of 18134811 in words is "eighteen million, one hundred thirty-four thousand, eight hundred eleven".