18141118 has 4 divisors (see below), whose sum is σ = 27211680. Its totient is φ = 9070558.

The previous prime is 18141103. The next prime is 18141119. The reversal of 18141118 is 81114181.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81114181 = 2339 ⋅34679.

It is a junction number, because it is equal to n+sod(n) for n = 18141092 and 18141101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18141119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4535278 + ... + 4535281.

It is an arithmetic number, because the mean of its divisors is an integer number (6802920).

Almost surely, 2^18141118 is an apocalyptic number.

18141118 is a deficient number, since it is larger than the sum of its proper divisors (9070562).

18141118 is an equidigital number, since it uses as much as digits as its factorization.

18141118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9070561.

The product of its digits is 256, while the sum is 25.

The square root of 18141118 is about 4259.2391339299. The cubic root of 18141118 is about 262.7572347662.

Adding to 18141118 its reverse (81114181), we get a palindrome (99255299).

The spelling of 18141118 in words is "eighteen million, one hundred forty-one thousand, one hundred eighteen".