18034811 has 4 divisors (see below), whose sum is σ = 18156000. Its totient is φ = 17913624.

The previous prime is 18034801. The next prime is 18034837. The reversal of 18034811 is 11843081.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18034811 - 2²² = 13840507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18034801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60371 + ... + 60668.

It is an arithmetic number, because the mean of its divisors is an integer number (4539000).

Almost surely, 2^18034811 is an apocalyptic number.

18034811 is a deficient number, since it is larger than the sum of its proper divisors (121189).

18034811 is a wasteful number, since it uses less digits than its factorization.

18034811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121188.

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 18034811 is about 4246.7412212189. The cubic root of 18034811 is about 262.2429762359.

Adding to 18034811 its reverse (11843081), we get a palindrome (29877892).

The spelling of 18034811 in words is "eighteen million, thirty-four thousand, eight hundred eleven".